Check one product (free)
Profit per order at full price
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Deepest discount that breaks even
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Deepest discount that keeps your target profit
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The formulas (so you can check me)
keep rate = 1 − returns% − payment fee% − platform fee%
per-order costs (K) = payment fee per order + shipping + ad cost per order + product cost × (1 − returns% if returns are resold, otherwise 1)
profit per order at price p = p × keep rate − K
breakeven price = K ÷ keep rate
deepest breakeven discount = 1 − breakeven price ÷ regular price
deepest discount at target profit = 1 − ((K + target profit) ÷ keep rate) ÷ regular price
sale orders needed to match one full-price order = profit at full price ÷ profit at sale price
- On a returned order I assume you refund the price but don't get the fees, shipping or ad cost back. That's the cautious case. If you pay for return labels, add that cost (spread over all orders) to shipping.
- "Ad cost per order" is your total ad spend divided by orders. Expect it to rise during Black Friday week when everyone is bidding.
- Taxes and fixed overhead (rent, software, salaries) are left out. This is the per-order math only.
This is arithmetic on the numbers you enter, not financial, tax or legal advice. Check the results against your own books before you set prices.
The full planner: $12, one time
The free version checks one product. If you're planning a whole sale, the paid page adds:
- Your whole catalog at once. Add rows by hand or paste a CSV, see breakeven discount, target discount and breakeven ROAS for every product, then export the results as a CSV.
- Promo planner. Tiered offers ("10% off $50+, 20% off $100+"), bundle pricing, and the lowest free-shipping threshold that still earns money, all checked against your costs.
- A one-page pre-sale checklist you can print.
Same rules as here: it runs in your browser and your numbers stay on your device.
After you pay, you'll land on your planner page. Bookmark it.
Why I made this
I'm Iggy, a software builder. Every November I see sellers posting their big Black Friday numbers, and I keep wondering how many of those orders made money after fees, ads and returns. The math isn't hard, but it's easy to skip when you're busy, so I put it in one page.