When is FBM more profitable than FBA? FBM wins when FBA's fulfillment + storage fees exceed your own shipping + handling cost. This typically happens with heavy or bulky items, or when you can negotiate very cheap outbound shipping rates. Use the break-even insight below the results to find the exact crossover point for your product.
Enter your selling price, costs, and dimensions. Instantly compare FBA and FBM net profit side by side — and see exactly which fulfillment method puts more money in your pocket.
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FBA Specifics
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Enter a selling price to compare FBA vs FBM.
FBA
Net Profit
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Margin
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ROI
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Referral Fee (15%)—
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FBM
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Referral Fee (15%)—
Outbound Shipping—
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Inbound Shippingn/a
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Break-even insight:FBM beats FBA if your total shipping + handling cost stays under — per unit.
Track real profit across every order — FBA and FBM
SellerGuards connects once via Amazon SP-API. Every order is automatically costed using FIFO inventory lots, giving you true per-order profit whether you're FBA, FBM, or both.
FBM wins when FBA's fulfillment + storage fees exceed your own shipping + handling cost. This typically happens with heavy or bulky items, or when you can negotiate very cheap outbound shipping rates. Use the break-even insight below the results to find the exact crossover point for your product.
What FBM costs should I include?
Include outbound shipping to the customer, packaging materials, labor and handling time, and any storage or warehouse costs you incur. Don't forget to compare inbound shipping to Amazon (an FBA cost) vs. your own warehouse costs for FBM — both are real costs that affect your true margin.
Does this include the FBA storage fee?
Yes — estimated monthly storage is calculated based on your product's dimensions and whether you toggle peak season (October–December) rates. Long-term storage (aged inventory surcharge at 181+ days) is not included. Factor that in manually if your inventory turns slowly.
Can I be both FBA and FBM on the same listing?
Yes. Amazon calls this a multi-channel or hybrid approach. You can use FBM as a backup when FBA stock runs out, or use FBM for oversized items while keeping standard-size items in FBA. Many sellers run both simultaneously on the same ASIN to maintain availability at all times.