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← ylishi.toolsKey fact: A promotion is only profitable when the incremental units it creates earn back the discount on every unit sold — including the units that would have sold at full price anyway. That is why a lift percentage on its own cannot tell you whether a deal made money. The free Promotion ROI calculator compares coupon, flash-sale and straight discount strategies on the same product and returns the profit impact of each.
Compare coupon, flash sale and bundle strategies side by side - then see which one wins on profit.
A promotion is only profitable when the incremental units it creates earn back the discount on every unit sold, including the units that would have sold at full price anyway. That is why a lift percentage on its own cannot tell you whether a deal made money.
They trade differently. A coupon is the easiest to control because the discount applies per unit and you set the depth. A flash sale moves volume fastest but trains buyers to wait for the next event. A bundle protects the average selling price but complicates returns and storage. This calculator scores all three on the same profit basis so the comparison is like for like.
Yes, and that is the point of the calculation. Units that would have sold at full price earn no incremental revenue but still carry the discount, so leaving them out is the most common way sellers convince themselves a deal worked.
Yes, it is free with no sign-up. Deal fees you enter, such as Lightning Deal fees of roughly $150 to $300, are your own inputs rather than ours.
❓ Amazon Promo ROI Calculator — Frequently Asked Questions → fees, limits, and worked examples