The costs sellers forget, a formula that includes your time, and how to raise prices without killing sales.
price = costs + fees + a bit on top
Fees are a percentage of the price, so raising the price raises the fees. Solve for the price from your target margin instead:
price = (fixed costs + flat fees) ÷ (1 − fee% − target margin%)
Example: $18.70 in costs+flat fees, ~9.5% total marketplace fees, 40% target margin → price ≈ $37, not "$18.70 + a bit."
Don't want to do algebra per product? The free profit calculator does this exact math — enter your numbers, see profit per sale, real margin, effective hourly pay, and the price you'd need for your target margin.
Free Handmade Profit Calculator — enter your costs and fees, see what you actually keep per sale. In your browser, no signup.
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