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Net profit = sale price − cost of goods − referral fee − FBA fulfillment fee − storage − inbound placement − shipping. This calculator does it all with the 2026 fee card.
Healthy ROI is 30%+ on cash invested (COGS + shipping). Below 20% leaves little room for ads, returns and price competition.
We solve for the price where profit = 0, including the 15% referral (or 8%/15% electronics tier), fulfillment, storage and your COGS + shipping. Round up to cover unexpected fees.
Common gaps: advertising spend, returns, peak-season storage, apparel processing and coupon fees. Enter your fixed monthly costs to see the real monthly picture.