How to Price Products for Profit (2026): The Margin Mistake Sellers Make
Here’s the trap almost every new seller falls into: you make something for $10, you “double it” to $20, and you assume you’re making $10 profit. Then the platform takes its cut, you factor in shipping, and your real profit is closer to $5. Markup is not margin, and fees quietly live in the gap between them.
Markup vs. margin
- Markup is profit as a percentage of your cost. Cost $10, sell $20 → 100% markup.
- Margin is profit as a percentage of your selling price. That’s the number that tells you how healthy the business actually is.
A 100% markup does not mean a 50% margin once fees and shipping come out. This is why two sellers with the “same markup” can have wildly different profitability.
Why you can’t just add a fixed markup
Marketplace fees are charged as a percentage of the selling price, not your cost. So the higher you price, the more fees you pay in absolute terms. You can’t simply add your costs and a flat markup — you have to solve for the price that leaves the margin you want after the percentage fees come out.
The relationship looks like this:
net profit ÷ selling price = your margin
Because fees scale with price, the only reliable way to hit a target margin is to work backwards from it.
The right way: price backwards from a target margin
- Decide your target net margin (e.g. 30%).
- Add up your real costs: materials, shipping you actually pay, packaging, returns buffer.
- Account for the platform’s percentage and fixed fees.
- Solve for the selling price where profit ÷ price equals your target.
Doing that by hand is fiddly because the fee percentage changes the answer, which changes the fee. That’s exactly what the calculator’s target margin field does for you — enter your costs and a target margin, and it returns the price you need to charge.
Worked example
Say an Etsy item costs you $10 all-in and you want a 30% net margin. After Etsy’s 6.5% transaction fee, 3% + $0.25 payment processing, and the $0.20 listing fee, you’d need to price it at about $17.30 — not the $13 a naive “30% markup” would suggest. The fees and the margin-vs-markup gap account for the rest.
A few pricing principles that hold up
- Always include shipping you pay, even on “free shipping” listings — it’s a real cost.
- Add a small returns/loss buffer (1–3%) so the occasional refund doesn’t wipe out a batch.
- Re-check when fees change. Platforms adjust rates; a fee increase silently lowers your margin until you reprice.
- Compare platforms before committing — the same item can clear very different margins.
Try it on your products
- Set a target margin and get your price → (use the target margin field)
- Etsy · eBay · Amazon · Shopify
Selling a whole catalog? SellerProfit Pro analyzes every product at once and flags the ones losing money.
Rates reflect US sellers as of May 2026. Confirm exact rates in your seller account.