Check an Amazon US product before ordering inventory. Enter your selling price, landed cost, Amazon fees, advertising cost and returns allowance to estimate profit per unit, margin, ROI and break-even ACoS.
The browser calculators are free. A free one-SKU Excel workbook is also available, with English and Simplified Chinese instructions and no email or signup requirement. The Excel file has its own example inputs; it does not import your browser entries.
You supply the costs and current fees. There is no Seller Central connection. A separate $39 workbook is optional. Results are planning estimates, not a forecast of final business income.