Amazon FBA vs FBM: Which Fulfillment Method Is Right for You?
A complete comparison of Fulfillment by Amazon (FBA) and Fulfilled by Merchant (FBM), costs, pros, cons, and when to use each.
Choosing between FBA and FBM is one of the most impactful decisions an Amazon seller makes. Both methods have distinct cost structures, operational requirements, and strategic implications.
What Does "FBA Store" Mean?
An FBA store is an Amazon seller account that fulfills its orders through Fulfillment by Amazon rather than shipping items itself. Amazon stores the inventory, packs it, ships it, and handles customer returns. The term covers both a seller's own catalog run this way and a pre-built, already-selling Amazon account offered for sale as a turnkey business.
If you're looking at buying an existing FBA store rather than building one, treat the listing like due diligence on any small business. Check 12 months of P&L, inventory age, review history, and whether sales depend on a single ASIN. Run the numbers through a fee and margin audit before you commit, since FBA fees quietly erode margin on products that looked profitable in the seller's own summary.
FBA (Fulfillment by Amazon) means you send your inventory to Amazon's fulfillment centers, and Amazon handles picking, packing, shipping, customer service, and returns. Your listings get the Prime badge, which significantly improves conversion rate. Prime-eligible listings typically convert 3-5x better than non-Prime listings.
FBM (Fulfilled by Merchant) means you store inventory yourself and ship each order directly to buyers. You pay no FBA fees but handle all logistics yourself. Seller-Fulfilled Prime (SFP) is a hybrid, you ship from your own warehouse but meet Prime speed and quality standards, earning the Prime badge without FBA fees.
What Does "Fulfilled by Amazon" Cost in 2026?
"Fulfilled by Amazon" costs three things on top of your product cost: a per-unit fulfillment fee starting at $3.65 for small standard-size items, a referral fee of 6% to 20% of the sale price depending on category, and monthly storage of $0.48 to $2.40 per cubic foot. Since April 17, 2026, Amazon also adds a 3.5% fuel and logistics surcharge on top of every fulfillment fee, so build that into any margin check before you commit inventory.
Cost comparison: FBA fees include a fulfillment fee per unit (based on size and weight, typically $3-$7 for standard-size products) plus monthly storage fees ($0.75/cubic foot in off-peak months, $2.40/cubic foot in October-December). For a standard-size product priced at $30, FBA fees plus referral fee might total $7-10, meaning 23-33% of revenue in fees.
FBM costs depend entirely on your shipping carrier, packaging, and labor costs. Sellers with efficient warehouse operations can sometimes undercut FBA fees for heavy or oversized products.
When FBA wins: products that are small, light, and high-value; products with strong seasonal demand where storage cost is manageable; sellers without warehouse infrastructure; and any situation where Prime badge drives conversion significantly.
When FBM wins: heavy or oversized products where FBA fee tiers make costs prohibitive; products with very slow turn rates where long-term storage fees would accumulate; sellers with existing warehouse operations; and during periods where FBA capacity is restricted.
Common questions
What does FBA store mean?
An FBA store is an Amazon seller account where orders are fulfilled by Amazon rather than the seller. Amazon handles storage, packing, shipping, and returns. The phrase also describes pre-built, already-selling Amazon accounts sold as turnkey businesses.
Is an FBA store the same as FBA fulfillment?
Not quite. FBA fulfillment is the shipping method itself. An FBA store is the whole seller account built around it, including the catalog, reviews, and sales history, which is why these accounts get bought and sold as businesses.
How much does it cost to start an FBA store?
Most new sellers start with $2,000 to $5,000 covering the first inventory order, UPC codes, photography, and initial PPC spend. Private label products with higher unit costs or certification requirements can push this well past $10,000.
Is buying an existing FBA store a good idea?
It can work, but verify the numbers yourself rather than trusting the summary the seller provides. Pull 12 months of P&L, check for ASIN concentration risk, and confirm the account has no unresolved policy strikes before you transfer any funds.
Is FBA worth it for a new seller?
For most new sellers, yes. The Prime badge and Amazon-handled logistics offset the fees for small, light, high-value products. It becomes less worth it for heavy, slow-moving, or very low-margin items, where FBM or Seller-Fulfilled Prime fits better.
How is an FBA store different from dropshipping?
In an FBA store you own the inventory and Amazon ships it from its own warehouses. In dropshipping you never hold stock and a third party ships directly to the customer, which violates Amazon policy unless you are the actual manufacturer or official distributor.
How much does Fulfilled by Amazon cost?
Three fees stack on top of your product cost: a per-unit fulfillment fee from $3.65 for small standard items, a referral fee of 6% to 20% of the sale price, and storage from $0.48 to $2.40 per cubic foot a month. A 3.5% fuel and logistics surcharge applies on top of fulfillment fees since April 2026.
What are Fulfilled by Amazon fees in 2026?
The main Fulfilled by Amazon fees are the fulfillment fee (size and weight based, from $3.65), the referral fee (6% to 20% of price), long-term and short-term storage fees, and the 3.5% fuel and logistics surcharge added in April 2026. Run your actual catalog through a fee audit, since the published rates are per-unit and the real margin hit depends on your specific products.