ShipStation is our top pick among the best order fulfillment companies, with mobile barcode-verified picking that the company says helps warehouse teams move 30%–40% faster. This guide breaks down pricing models, integrations, and best-fit use cases for this and eight other providers.
Hi, I'm Michael Marshall from FreightWaves
ShipStation centralizes order management, rate shopping, and label printing across every channel you sell on with ShipStation Intelligence, automating the busywork and one of the broadest carrier and integration networks in the industry behind it.
Automation that creates labels up to 15x faster
Broadest carrier & marketplace network in the category
Branded, self-service returns portal
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We evaluate ecommerce shipping and fulfillment platforms for online sellers, growing merchants, and operations teams, weighing factors like pricing, integrations, automation depth, and support quality.
Our in-house team regularly reviews and updates this content to ensure it remains accurate, current, and genuinely useful for merchants evaluating shipping and fulfillment software.
9 Best Order Fulfillment Companies of 2026
Each of these nine providers approaches fulfillment differently, from software you run yourself to warehousing built around a specific product type, sales channel, or compliance requirement.
Top Order Fulfillment Companies at a Glance
| Company | Best For | Pricing Model | Standout Capability |
|---|---|---|---|
| ShipStation | Sellers running fulfillment in-house | Published tiers from $14.99/month | Multi-carrier rate shopping and automation rules |
| ShipBob | Growing DTC and omnichannel brands | Custom quote | 50+ fulfillment centers for distributed inventory |
| ShipMonk | Subscriptions, crowdfunding, and kitting | Custom quote | Subscription box assembly and bundling |
| Red Stag Fulfillment | Heavy, oversized, and high-value goods | Custom quote | Accuracy guarantees backed by compensation |
| Fulfillment by Amazon | Amazon-first sellers | Usage-based per unit | Prime eligibility and Buy Box competitiveness |
| ShipNetwork | High-volume ecommerce brands | Custom quote | Xparcel carrier selection per order |
| Flexport | Scaled sellers needing freight and fulfillment | Usage-based, $5,000 monthly minimum | Fulfillment, freight, and customs on one platform |
| ShipHero | Hybrid 3PL and in-house operations | Per order plus storage, WMS licensed separately | WMS licensing alongside its own 3PL network |
| Shipfusion | Regulated categories | Custom quote, compliance itemized | Lot and expiry tracking with quality holds |
ShipStation
Best for: Sellers who want to run fulfillment themselves with multi-carrier automation instead of handing warehousing to a third-party logistics (3PL) provider.
Instead of storing your inventory, ShipStation gives you the software layer that a fulfillment company would otherwise run on your behalf. This allows you to pull orders from every sales channel into one queue, compare carrier rates, and print labels in batches. For merchants with their own space and staff, that often costs far less than outsourcing.
How It Works
ShipStation aggregates orders from Shopify, Amazon, eBay, Etsy, WooCommerce, Walmart, BigCommerce, TikTok Shop, and other connected platforms into a single inbox. It then applies if-then rules that set service level, packaging, insurance, and confirmation type, without anyone clicking through each order. With ShipStation Intelligence, the platform’s AI layer, a team can describe a workflow in plain language, allowing teams create up to 15 times more labels per hour.
Tools & Integrations
Inventory syncs across connected channels the moment a label is created, which helps prevent overselling caused by sync delays. Mobile, barcode-verified picking can help warehouse staff move 30%–40% faster than paper pick lists, and scan-to-receive can cut receiving time by up to 10 hours a month. The platform also supports vendor purchase orders, lot tracking with expiration dates, and product bundles that deduct components automatically as they sell.
Returns & International Shipping
A branded self-service portal lets customers start a return, generate a QR code for a box-free drop-off, and track status without contacting support. Every return gets an RMA number linking the original order, label, reason code, and refund or exchange status. For U.S. and Canada-based accounts shipping internationally from the U.S., Pre-Paid Duties and Taxes Guaranteed calculates and pays duties at label creation on qualifying UPS, FedEx, and DHL Express services, so recipients are not billed by the carrier at delivery.
Pricing
The ShipStation Starter plan begins at $14.99 per month for up to three users. Standard starts at $29.99 per month for up to 10 users and adds unlimited automation rules and API access. Premium starts at $349.99 per month for up to 15 users with advanced inventory and warehouse management. Each tier scales by monthly shipment volume. A 30-day free trial is available with no credit card required, and annual billing carries a 20% discount.
Best Fit
ShipStation makes the most sense for merchants selling across several channels who already have somewhere to store inventory and someone to pack it. Sellers who want warehousing handled entirely by someone else should look at the outsourced 3PLs below instead, and very low-volume shippers may find a pay-as-you-go tool cheaper until they scale.
Pro tip: Before you shortlist a 3PL option, price out what your current operation would cost with software alone. Plenty of merchants outsource warehousing when the real bottleneck was manual label printing. A platform like ShipStation can solve this for a fraction of a fulfillment contract.
ShipBob
Best for: Growing ecommerce and omnichannel brands that want to outsource fulfillment.
ShipBob is one of the largest technology-enabled third-party logistics providers serving ecommerce brands. It pairs a global network of fulfillment centers with its own order and inventory management software. Merchants can spread inventory across multiple warehouses to shorten transit times and cut shipping costs. Beyond direct-to-consumer orders, ShipBob supports wholesale, retail dropshipping, Amazon FBA prep, and international expansion from one dashboard.
How It Works
ShipBob operates more than 50 fulfillment centers across the United States, Canada, Europe, Australia, and other international markets. Merchants can split inventory across locations so each order ships from the facility closest to the customer. This could cut shipping costs by as much as 25% while improving delivery speeds and lowering cart abandonment.
Pricing
ShipBob quotes custom pricing instead of publishing flat rates. Standard costs cover implementation, receiving, warehousing, picking, packing, and shipping. Kitting, custom packaging, returns processing, and wholesale fulfillment are priced separately. The software, reporting dashboard, and ecommerce integrations come included for fulfillment customers rather than billed as a standalone subscription.
Tools & Integrations
The cloud platform gives merchants real-time visibility into inventory levels, order status, and warehouse performance. Direct integrations connect Shopify, WooCommerce, BigCommerce, Amazon, Walmart Marketplace, and other platforms and marketplaces. Developer application programming interfaces (APIs) support custom builds. Brands running their own warehouses can also license ShipBob’s warehouse management system to manage in-house fulfillment alongside ShipBob-operated facilities.
Best Fit
ShipBob works best for brands shipping enough volume to benefit from spreading inventory across several fulfillment centers. Companies selling through multiple channels or expanding overseas can run direct to consumer (DTC), wholesale, marketplace, and Amazon fulfillment in one platform. Smaller businesses with lower order volume may find a regional partner more economical.
ShipMonk
Best for: Startups, subscription box companies, crowdfunding campaigns, and fast-growing brands.
ShipMonk is a technology-first third-party logistics provider that pairs its own fulfillment software with a global warehouse network. The company built its reputation on Kickstarter campaigns and subscription boxes, then expanded into direct-to-consumer, B2B retail, marketplace, and enterprise fulfillment. Merchants manage inventory, orders, returns, and warehouse operations from one dashboard.
How It Works
ShipMonk operates fulfillment centers across the United States, Canada, Mexico, Europe, and the United Kingdom. Alongside standard ecommerce fulfillment, it handles wholesale distribution, Amazon FBA prep, retailer compliance, and international shipping. Brands can use that network to expand into new countries without opening their own distribution facilities.
Pricing
ShipMonk quotes custom pricing based on storage requirements, monthly order volume, product dimensions, and fulfillment complexity. Costs typically break out into receiving, storage, pick-and-pack, shipping, and optional services such as kitting, custom packaging, subscription box assembly, and returns processing.
Tools & Integrations
The software provides real-time inventory visibility, order tracking, warehouse reporting, and automation tools built to cut manual work. Native integrations cover Shopify, BigCommerce, WooCommerce, Amazon, Walmart Marketplace, TikTok Shop, Etsy, and eBay, with APIs available for custom workflows. Businesses selling both direct-to-consumer and wholesale can manage inventory allocation across channels in the same platform.
Best Fit
ShipMonk suits growing businesses that expect fulfillment to get more complicated over time. Subscription boxes, crowdfunding campaigns, bundled products, and merchants moving into wholesale can all benefit. Smaller sellers tend to value the flexibility, while larger brands can add international fulfillment and retail compliance.
Red Stag Fulfillment
Best for: Heavy, oversized, fragile, and high-value products.
Red Stag Fulfillment is built for ecommerce brands shipping the products many fulfillment companies turn down, including furniture, fitness equipment, appliances, and premium electronics. Red Stag concentrates on accuracy, damage prevention, and fast ground delivery. Its strategically placed fulfillment centers reach roughly 96% of U.S. households within two days on standard ground shipping.
How It Works
Red Stag guarantees two-business-day dock-to-stock receiving, on-time order fulfillment, pick-and-pack accuracy, and zero inventory shrinkage once products are received into its warehouses. When Red Stag misses one of those commitments, it offers financial compensation. Same-day shipping is available on qualifying orders.
Tools & Integrations
Red Stag positions a smaller number of U.S. warehouses to maximize two-day ground coverage while keeping inventory management simple. Operations cover direct-to-consumer fulfillment, B2B and retail distribution, Amazon FBA prep, kitting, custom packaging, and returns. Its warehouse management system gives merchants real-time visibility into inbound shipments, stock levels, and order status.
Pricing
Red Stag quotes custom pricing rather than fixed monthly plans, based on inventory volume, product dimensions, storage requirements, shipping volume, and any value-added services. Quotes usually land higher than providers focused on lightweight consumer goods, reflecting the extra labor, packaging, and freight expertise heavy items demand. Ask for a quote that itemizes receiving, storage, fulfillment, and optional services.
Best Fit
Red Stag is a strong choice when your products are heavy, oversized, fragile, or expensive. Furniture, sporting equipment, appliances, and premium electronics brands get the most from its accuracy guarantees and specialized handling. Companies shipping lightweight apparel or small consumer goods will likely find a larger network or a lower-cost ecommerce 3PL to be a better match.
Fulfillment by Amazon (FBA)
Best for: Amazon-first sellers that want Prime eligibility and hands-off fulfillment through Amazon’s network.
Fulfillment by Amazon lets sellers store inventory in Amazon fulfillment centers while Amazon handles picking, packing, shipping, customer service, and returns on eligible orders. Because FBA products qualify for Prime shipping, sellers typically see faster delivery, better Buy Box competitiveness, and stronger customer trust. FBA is built around Amazon sales, but Multi-Channel Fulfillment extends the same network to orders from your own site and other marketplaces.
How It Works
Amazon runs one of the largest fulfillment networks in the world, enabling fast delivery across the United States and many international markets. Once inventory is received, Amazon decides where products are stored and may redistribute stock between fulfillment centers to position it closer to customers.
Pricing
FBA pricing is usage-based rather than subscription-based. Sellers pay a fulfillment fee on each order plus monthly inventory storage fees, with additional charges possible for aged inventory, removals, returns in certain categories, and optional services. Costs move with product size, weight, and season.
Tools & Integrations
Multi-Channel Fulfillment (MCF) ships orders placed through Shopify, WooCommerce, BigCommerce, and other platforms using Amazon’s warehouses and carriers. It lets businesses use that network beyond Amazon.com while managing inventory centrally. Fulfillment costs vary by destination, shipping speed, and product characteristics.
Best Fit
FBA is the obvious choice for businesses earning most of their revenue on Amazon or looking to maximize Prime visibility and Buy Box performance. Merchants selling mainly through their own stores, or those who need custom packaging, branded unboxing, or more control over warehouse operations, tend to do better with a traditional 3PL. Plenty of growing brands run FBA alongside a second fulfillment partner.
ShipNetwork
Best for: High-volume ecommerce brands that need fast, consistent nationwide delivery.
ShipNetwork, formerly Rakuten Super Logistics, targets ecommerce brands with proven order volume rather than early-stage stores. Sellers shipping at least 250 orders a month are generally the right profile. The company’s focus is on tightening delivery times across the country rather than serving as an entry-level fulfillment option.
How It Works
ShipNetwork’s Xparcel program compares carrier options on every order and selects either the fastest or the least expensive method, depending on how the merchant configures it. For brands shipping at volume, that per-order decision is where the savings compound.
Tools & Integrations
Beyond standard pick-and-pack, ShipNetwork supports lot tracking, refrigerated storage, and freight. It also offers electronic data interchange (EDI) connections and retail dropship support for brands selling into big-box retailers.
Pricing
ShipNetwork does not publish pricing. Onboarding, storage, and pick-and-pack costs are quoted individually based on order volume, package weight, and SKU count. Ask for a quote modeled on a real month of your order data rather than an average.
Best Fit
ShipNetwork fits established sellers who have outgrown a basic fulfillment setup and are now optimizing for delivery speed and shipping cost per order. Brands with refrigerated, lot-controlled, or retail-bound inventory get capabilities that general-purpose 3PLs often lack. Sellers below the 250-order threshold will likely get better terms and more attention elsewhere.
Flexport
Best for: High-volume marketplace sellers that need freight and fulfillment managed together.
Flexport combines fulfillment with international freight and customs handling, making it closer to an all-in-one logistics partner than a standalone fulfillment center. It supports sellers across marketplaces well beyond Amazon, including Shopify, Walmart, and SHEIN Marketplace.
How It Works
The reason to choose Flexport is consolidation. Moving inbound freight, customs clearance, and outbound fulfillment onto one platform removes the handoffs between separate vendors. For brands importing containers and shipping parcels out of the same inventory, that single view is valuable.
Tools & Integrations
Flexport offers inventory balancing across nodes along with FBA replenishment support, which suits brands running a hybrid Amazon and direct-to-consumer strategy. Rather than treating Amazon inventory and DTC inventory as separate pools managed by different providers, merchants can plan both from the same platform.
Pricing
As of January 1, 2026, Flexport requires a $5,000 monthly minimum fulfillment spend. Pricing is usage-based, with separate charges for storage, wholesale and B2B handling, non-compliance, and warehouse value-added services. Non-compliance fees are worth reviewing before signing, since they depend on how well your inbound shipments match Flexport’s requirements.
Best Fit
Flexport fits brands already operating at scale that want fulfillment and freight on one platform. If your fulfillment spend is comfortably above the $5,000 monthly minimum and you are importing regularly, the consolidation pays off.
ShipHero
Best for: Operators who want both outsourced and in-house fulfillment options under one system.
ShipHero runs a hybrid model. Sellers can fulfill through its 3PL network, license its warehouse management system to run their own distribution centers, or do both. That means a growing brand can mix owned and outsourced warehouses under one playbook.
How It Works
ShipHero’s structure is ideal for brands that expect to bring fulfillment in-house eventually but are not ready yet. You can start on the 3PL side and move to licensed software later without retraining your team on a new platform.
Tools & Integrations
The warehouse management system includes cartonization and rate shopping tools along with developer-friendly APIs for custom builds, and it connects with Shopify, Amazon, and BigCommerce. Value-added services cover returns portals, inventory forecasting, and cycle counting support.
Pricing
Pricing runs per order plus storage on the 3PL side, with WMS licensing billed separately. Budget for two line items rather than one if you plan to use both.
Best Fit
ShipHero suits operators who want optionality more than they want the absolute lowest per-order cost. Brands with a clear plan to open their own distribution center in the next few years get the most value, as do teams with developers who will actually use the APIs. Other options on this list are better for merchants who simply want fulfillment handled.
Shipfusion
Best for: Regulated categories like cosmetics and nutraceuticals.
Shipfusion focuses on compliance-heavy product categories that require documented handling. That specialization means you don’t have to audit a general-purpose fulfillment partner’s regulatory processes and hope they hold up.
How It Works
Shipfusion supports lot and expiry tracking, quality holds, and environmental controls for temperature and humidity. Value-added services extend to FDA and GMP-adjacent processes, recall execution, and detailed quality control documentation. For a supplement or cosmetics brand, recall execution alone can justify the choice.
Tools & Integrations
The platform connects with Shopify and Amazon, along with enterprise resource planning (ERP) and analytics tools. That planning connection is valuable since expiry-dated inventory has to be sold in sequence.
Pricing
Pricing is quote-based, and Shipfusion itemizes compliance services separately from standard pick, pack, and storage fees. Expect a more involved quoting process than with a general-purpose 3PL.
Best Fit
Shipfusion is the right call for cosmetics, supplements, and other categories where lot control, expiry dates, and documented processes are non-negotiable. Brands outside those categories would do better with a provider priced around straightforward pick-and-pack.
What Is an Order Fulfillment Company?
An order fulfillment company stores your inventory and handles the logistics that turn an online order into a delivered package. Core services include receiving goods, warehousing, picking, packing, shipping, and processing returns. Most providers connect those workflows to your storefront and marketplaces through native integrations and APIs, so stock levels and tracking updates flow automatically rather than through spreadsheets.
The terms “3PL” and “fulfillment company” overlap in ecommerce, because many third-party logistics providers run direct-to-consumer fulfillment alongside freight, customs, and B2B distribution. A fulfillment company usually emphasizes parcel pick-and-pack and marketplace integrations. A broader 3PL may also manage inbound freight, cross-docking, and retail replenishment. If you expect to add wholesale or retail channels soon, confirm EDI and routing-guide support before you sign anything.
How Order Fulfillment Works
Fulfillment is a traceable relay from your supplier to each customer. Here is the typical lifecycle:
- Receiving: Inventory arrives by container, LTL, or parcel, then gets inspected, counted, and booked into the warehouse management system.
- Warehousing: Stock is stored in bins, pallets, or racks while real-time levels sync back to your store.
- Picking: As orders come in, pick paths are generated and items are pulled by SKU or barcode scan.
- Packing: Items are verified, protected, and labeled using the service that balances speed and cost.
- Shipping: Parcels are manifested and handed to carriers or regional couriers with tracking enabled.
- Delivery: Exceptions such as delays or damage are monitored, ideally with proactive alerts to the customer.
- Returns: Returned items are received, inspected, and either restocked or disposed of according to your policy.
How To Choose an Order Fulfillment Partner
The right provider depends on your product and customer map. Work through these criteria before you request quotes so you are comparing the same things across providers.
- Network fit: Match warehouse locations to where your customers actually live. Bicoastal inventory placement is the fastest route to two-day ground coverage for most U.S. shoppers, and it cuts zones, fuel, and transit time at the same time.
- SKU and order profile: Document dimensions, weights, fragility, kitting needs, lot and expiration controls, and seasonality to make bids comparable.
- Channel coverage: List every channel you sell through, including Shopify, WooCommerce, Amazon, Walmart, and wholesale. Confirm native integrations exist.
- Itemized pricing: Ask for receiving, storage, pick-and-pack, materials, inserts, kitting, returns, account management, and surcharges broken out separately.
- Order minimums and contracts: Clarify start-up fees, ramp timelines, and monthly minimums before onboarding.
- Service level agreements: Align on on-time shipment, pick and inventory accuracy, and claims handling.
- Support structure: A named account manager, response time commitments, and a clear escalation path protect your operation during peak season.
- Exit terms: Negotiate how you leave before you arrive.
Run a pilot before you migrate your full catalog. Ship a subset of SKUs across both typical and edge-case scenarios, then measure actual performance against the promised service levels. A pilot is also the only reliable way to learn what your true total cost to serve looks like.
What Order Fulfillment Actually Costs
Almost every provider on this list quotes custom pricing, which makes direct comparison difficult. ShipStation is the exception, with published tiers starting at $14.99 per month, because it sells software rather than warehouse space. For the outsourced providers, expect a quote assembled from these components:
- Receiving: Charged when inventory arrives, usually by pallet, carton, or unit, and sometimes by the hour
- Storage: Billed by bin, shelf, or pallet position per month
- Pick and pack: A base fee per order plus an additional charge for each extra item
- Packaging materials: Boxes, mailers, void fill, and tape, either at cost or with a markup
- Value-added services: Kitting, subscription box assembly, custom inserts, labeling, and FBA prep
- Returns processing: Charged per return, with separate rates depending on whether an item is restocked, refurbished, or disposed of
- Surcharges: Peak season, fuel, oversized items, and non-compliance fees
For broader context on category growth, the U.S. Census Bureau publishes quarterly ecommerce retail sales figures.
In-House vs. Outsourced Fulfillment
Outsourcing is not automatically the right answer. The tradeoff comes down to how much control you need, how concentrated your volume is, and whether logistics is a core competency for your team.
| Factor | In-House | Outsourced (3PL) |
|---|---|---|
| Upfront investment | Warehouse lease, equipment, software, and labor | Minimal, with pay-as-you-go fees |
| Control | Maximum control over process and branding | Control through service level agreements and documented procedures |
| Scalability | Slower, limited by hiring, training, and space | Faster, with added nodes and capacity on demand |
| Speed to new regions | Limited by a single node or local network | Multi-node reach that shortens zones and transit time |
| Total cost to serve | Potentially lower at very high, concentrated volume | Often lower at small and mid-market volumes |
| Team focus | Requires internal logistics expertise and staffing | Frees the team to focus on product, brand, and growth |
Keep fulfillment in-house when you need to protect proprietary kitting, when your volume is very high and concentrated in one region, or when your team already has operations expertise. Outsource when you are chasing multi-region growth, managing seasonal volatility, adding channels quickly, or expanding across borders. Or, keep fulfillment in-house and buy software.
Our Methodology
We evaluated providers on network coverage and delivery speed, pricing transparency, inventory and returns workflows, integration depth, specialty capabilities, and support structure. Our review drew on public documentation, published pricing, integration listings, and stated service level commitments, with weight given to how each provider performs for a specific type of seller.
Our Take
Every company here handles fulfillment differently, so the right pick depends on what you sell, how much you ship, and whether you want to outsource fulfillment or run it yourself.
Sellers who want to keep fulfillment in-house should start with ShipStation’s automation, rate shopping, and returns tools. Growing ecommerce and omnichannel brands with rising order volume tend to do best with ShipBob’s distributed warehouse network, while subscription and crowdfunding businesses get more from ShipMonk’s kitting capabilities. Red Stag is the clear answer for heavy and high-value goods, and Amazon-first sellers should look at FBA for Prime eligibility.
Higher up the volume curve, high-volume DTC brands fit ShipNetwork’s nationwide delivery focus, and sellers who need freight and fulfillment combined should consider Flexport once they can meet its $5,000 monthly minimum. Operators who may want to run their own warehouse eventually should look at ShipHero, and brands in regulated categories like cosmetics or supplements should start with Shipfusion.
FAQ
What is an order fulfillment company?
An order fulfillment company stores your inventory and handles receiving, warehousing, picking, packing, shipping, and returns for online orders. These workflows connect to your storefront and marketplaces through integrations and APIs, so stock levels and tracking updates sync automatically. Many providers also offer kitting, custom inserts, and retail-compliant B2B services alongside standard parcel fulfillment.
How much do order fulfillment services cost?
Most fulfillment invoices include receiving, storage, pick-and-pack, packaging materials, optional kitting, and returns processing. Rates vary by SKU size and weight, order complexity, storage type, and service level, and eight of the nine providers on this list quote custom pricing rather than publishing rates. ShipStation is the exception at $14.99 per month for its Starter plan, because it sells software rather than warehouse space. Ask for an itemized quote modeled on a real month of your order data, including the full surcharge schedule.
What is the difference between a 3PL and a fulfillment company?
The terms overlap in ecommerce, because many third-party logistics providers run direct-to-consumer fulfillment alongside freight, customs, and B2B distribution. A fulfillment company usually emphasizes parcel pick-and-pack and marketplace integrations, while a broader 3PL may also manage inbound freight, cross-docking, and retail replenishment. Flexport sits at the broader end of that range, combining fulfillment with freight and customs. Choose based on your current mix of direct-to-consumer, retail, and international needs.
Which order fulfillment company is best for small businesses?
Small businesses with their own storage space often do best with ShipStation, since its Starter plan runs $14.99 per month and avoids the minimums that outsourced providers attach to their contracts. For merchants who want warehousing handled entirely, ShipMonk and ShipBob are common starting points thanks to their Shopify integrations and multi-channel support. Providers built for scale, including ShipNetwork at 250 orders a month and Flexport at a $5,000 monthly minimum, are generally not a fit at low volume.
Can I use Fulfillment by Amazon for orders placed outside Amazon?
Yes, through Multi-Channel Fulfillment. MCF ships orders placed on Shopify, WooCommerce, BigCommerce, and other platforms using Amazon’s warehouses and carrier network. Compare MCF pricing against a dedicated third-party logistics provider before committing, since costs vary by destination, shipping speed, and product characteristics. Many growing brands run FBA for Amazon sales and a separate 3PL for direct-to-consumer orders rather than choosing one.
Do I need a fulfillment company or shipping software?
You need a fulfillment company if you lack warehouse space, staff, or the desire to manage either. You need shipping software if the actual bottleneck is manual order processing and label printing rather than physical capacity. Merchants often outsource warehousing when a platform like ShipStation would have solved the problem at a fraction of the cost of a fulfillment contract, so price out both before deciding.
What should I check before signing a fulfillment contract?
Confirm the itemized fee schedule including all surcharges, the monthly minimum and any start-up fees, the service level agreements for on-time shipment and pick accuracy, and what compensation applies when those commitments are missed. Verify that native integrations exist for every channel you sell through rather than assuming one can be built later. Negotiate exit terms and inventory removal costs upfront, while the provider is still competing for your business.