Retail Selling Price ($)Unit Landed Cost (COGS) ($)Amazon Referral Fee (%)Enter the exact category and price-band rate shown in Fee Preview; the tool does not guess a category.Estimated Monthly Sales (Units)PPC / Advertising Cost per Unit ($)Shared by both methods so each net-margin result includes acquisition cost.Other Shared Selling Fees per Unit ($)Closing, transaction, or other per-unit costs that apply equally to FBA and FBM.

FBA Net Profit / Unit$8.6929.0% net margin (41% ROI on total expense)

FBM Net Profit / Unit$5.7919.3% net margin (24% ROI on total expense)

Profit Difference / Unit$2.90FBA generates higher profit

Annual Profit Difference$10,440Based on 300 units/mo

FBA Fulfillment (Pick & Pack Fee) ($)Inbound Shipping to FBA per Unit ($)Monthly Storage Allocation per Unit ($)Customer Returns & Damage Reserve per Unit ($)Other FBA Program Fees per Unit ($)Inbound placement, low-inventory-level, aged-inventory, labeling, or other applicable allocations.Tax / Surcharge on FBA Fees per Unit ($)Enter the direct per-unit amount shown by your marketplace; do not use a US assumption for another country.

Amazon Referral Fee:$4.50

Total FBA-Method Costs:$10.30

Break-Even Selling Price:$19.76

Monthly Net Profit:$2,607.45

Carrier Direct Shipping (USPS/UPS/FedEx) ($)Box, Mailer & Packaging Material ($)Labor / Warehouse Pick & Pack ($)Storage / 3PL Overhead per Unit ($)FBM Return Postage & Handling per Unit ($)Other FBM Costs per Unit ($)Software, 3PL account, residential, remote-area, signature, or other allocated costs.Tax / Surcharge on FBM Amazon Fees per Unit ($)

Amazon Referral Fee:$4.50

Total FBM-Method Costs:$13.20

Break-Even Selling Price:$23.18

Monthly Net Profit:$1,737.45

Referral fee = selling price × entered rate. Net profit subtracts product cost, advertising, shared selling fees, and every method-specific per-unit input. ROI is net profit ÷ total per-unit expense. Break-even price solves all entered fixed per-unit costs against the entered percentage referral rate. The result is a scenario comparison, not an Amazon or carrier quote.

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Amazon FBA vs FBM Profit Calculator

Fulfilled by Amazon (FBA)

Fulfilled by Merchant (FBM)

Amazon FBA vs FBM Profit Calculator

Fulfilled by Amazon (FBA)

Fulfilled by Merchant (FBM)