Moving away from Fulfillment by Amazon (FBA) is not a choice between three unrelated services. Fulfilled by Merchant (FBM) is a way to fulfill Amazon orders yourself or through a provider. A third-party logistics provider (3PL) can do that work for you. Seller Fulfilled Prime (SFP) is a program that lets qualifying sellers offer Prime delivery without using FBA.
The practical decision is who will store and ship each product, whether Prime eligibility matters for that product, and what it costs to meet the promised delivery date. You can also keep some products in FBA while using another setup for others.
How FBA, FBM, a 3PL, and SFP fit together
- FBA: You send inventory to Amazon. Amazon handles fulfillment and related customer service and returns.
- Self-managed FBM: Your team stores, packs, and ships orders. You manage the work needed to meet Amazon’s requirements.
- FBM with a 3PL: A fulfillment provider handles agreed warehouse and shipping tasks. Outsourcing those tasks does not remove your responsibilities as the Amazon seller.
- SFP: Eligible seller-fulfilled offers can carry Prime branding after the seller qualifies and completes the trial. Choosing a 3PL does not automatically make an offer Prime eligible.
That distinction matters when requesting quotes. A provider may be able to handle ordinary FBM orders without being able to support your SFP requirements. Confirm the specific products, delivery coverage, operating schedule, and order volume before making a commitment.
Start with the reason you are considering an FBA alternative
FBA can be a useful fit when you want Amazon to manage fulfillment. Before replacing it, identify the issue you need to solve for each product:
- Cost: Is the concern storage, fulfillment, inbound shipping, returns, or inventory sitting too long?
- Operations: Do you need a different packing process, more direct inventory oversight, or a different arrangement for handling returns?
- Sales channels: Are you planning to serve Amazon and your own store from the same inventory?
- Capacity: Can the proposed operation handle your busiest days, not just an average month?
Do not assume the alternative will be cheaper or have unlimited storage. Compare the actual products, package dimensions, order mix, destinations, and service requirements. Check the current Amazon FBA information alongside a detailed provider quote or your own operating costs.
FBM: fulfill orders yourself or choose a provider
With Fulfilled by Merchant, fulfillment is managed outside FBA. You can run it in-house or use a 3PL. Either way, Amazon’s seller performance, shipping, and return requirements still apply. FBM is not a way to avoid Amazon’s rules.
Self-fulfillment may fit when you already have reliable space, staff, and packing processes, or when a product needs work your team must perform. Count the time spent receiving stock, packing orders, answering delivery questions, and processing returns. Those costs remain real even when the owner does the work.
A 3PL may fit when you want to outsource the daily warehouse workload. Confirm what is included in the agreement rather than assuming every provider offers the same services. In particular, establish:
- How orders arrive, when they must be received to ship, and when tracking is sent back to Amazon.
- Who investigates an inventory mismatch, late order, missing package, or return.
- Which packaging and handling instructions the provider can support.
- How extra charges, peak demand, storage needs, and inventory removal are handled.
Seller Fulfilled Prime: a qualification process, not an automatic upgrade
Amazon’s U.S. Seller Fulfilled Prime program lets qualifying sellers display Prime branding while fulfilling orders without FBA. Its current enrollment path includes prequalification, a 30-day trial, and ongoing performance requirements after enrollment.
Amazon directs sellers to check their prequalification status in Seller Central. It considers package volume and performance measures such as late shipments, valid tracking, and cancellations. The trial and ongoing program requirements must also be met. Check the current requirements for your marketplace and products rather than relying on a general shipping-speed claim or an old list of thresholds.
SFP is not simply a promise to ship every order in two days. Amazon’s U.S. guidance discusses same-day, one-day, and two-day delivery order limits and tells sellers to set those limits according to what they can reliably ship. The relevant delivery requirements, coverage, pickup schedule, and capacity all need to be built into your operating plan.
Amazon also says SFP sellers can choose packing and packaging materials, while Amazon handles post-order customer service and automatically authorizes returns initiated within the return window. More control over physical fulfillment does not mean unrestricted control over the Amazon customer relationship.
If you are considering a provider for SFP orders, ask how its proposed service supports your current program requirements. Review actual cutoff times, carrier collections, weekend arrangements, tracking flow, and exception handling. Do not treat a provider’s willingness to ship Amazon orders as proof that your account or products qualify for Prime.
These program details refer to Amazon’s U.S. seller information. Check the relevant marketplace rules when selling elsewhere. A worldwide fulfillment plan and Prime eligibility are separate questions.
Compare total cost, not just the pick-and-pack fee
Use the same order and product data for each option. Ask for the charges that apply to your account and proposed service, including:
- Receiving, storage, and inventory handling.
- Picking, packing materials, and any special preparation.
- Shipping by package size, weight, destination, and delivery speed.
- Returns, inspection, disposal, or sending stock back to you.
- Account fees, minimum charges, setup costs, and seasonal surcharges where applicable.
- Your team’s labor and the work needed to manage exceptions.
Keep Amazon selling fees separate from fulfillment costs so you do not mistake leaving FBA for leaving Amazon’s selling fees behind. For SFP, include the cost of delivering to the required standard. A low warehouse handling fee is not enough to show that the whole operation will cost less.
You do not have to move every product at once
A mixed approach can keep suitable products in FBA while using FBM for others. Amazon’s FBM guidance explicitly allows sellers to use FBM and FBA together. Decide product by product rather than assuming one method is best for the entire business.
Before moving inventory, define which location owns each order, how available stock is updated, and where returns will go. If a 3PL will also prepare or replenish FBA inventory, confirm that work and its charges separately. Do not assume it is included in an FBM agreement.
For orders from your own website or other channels, compare the actual available services rather than assuming only a 3PL can support them. Amazon’s FBA and FBM comparison also describes Multichannel Fulfillment for orders placed on your website and other sales channels. The choice should reflect your inventory, packaging, delivery, and cost needs across those channels.
Choose the setup you can verify
Keep FBA where its service and cost fit. Consider self-managed FBM where your team can reliably do the work. Consider a 3PL when outsourcing the warehouse operation solves a specific capacity or workload problem. Evaluate SFP separately when Prime eligibility is important and the operation can support its requirements.
ShipBuddies ships worldwide. If you are comparing fulfillment options, share your product dimensions, monthly and peak order volumes, sales channels, destinations, and handling needs. Request a quote to discuss the service and pricing that fit your business.
