The Complete Guide to Profit Per Order in E-commerce
By Arshi Khan, Founder of Just4Marketing · Last reviewed October 2026
A product can look profitable on paper and still lose money once marketplace fees, payment processing, shipping, packaging, and advertising come out of each sale. This guide walks through every cost that sits between your selling price and your actual profit, and shows how to find the most you can afford to spend on ads for each order.
Where the money goes on a $50 order
| Item | Amount |
|---|---|
| Selling price | $50.00 |
| Product cost | −$15.00 |
| Shipping + packaging | −$6.00 |
| Marketplace fee (10%) | −$5.00 |
| Payment fee (2.9% + $0.30) | −$1.75 |
| Profit before ads | $22.25 |
| Ad cost per order | −$8.00 |
| Profit per order | $14.25 (28.5% margin) |
Ways to raise profit per order
Raise average order value
Bundles and free-shipping thresholds spread fixed costs like packaging and per-order fees over more revenue.
Watch fixed per-order fees
A $0.30 payment fee is 3% of a $10 order but under 1% of a $50 one — low-priced items feel fixed fees most.
Track ad cost per order, not per click
Cheap clicks don't help if few of them buy. Divide total ad spend by orders to get the number that matters.
Frequently asked questions
How do I calculate profit per order?
Start with the price the customer pays after any discount. Subtract your product cost, the shipping and packaging you pay, marketplace and payment fees (both percentage and fixed parts), and the ad cost per order. What's left is your profit on that order.
What is the maximum I should spend on ads per order?
Your profit before ads is the most you can spend to win one order without losing money. This is also called your break-even cost per acquisition (CPA). Spending less than that leaves profit; spending more loses money on every sale.
Why do I enter the fees myself?
Marketplace and payment fees depend on your platform, category, plan, and country, and they change over time. Entering your own rates keeps the result accurate for your shop instead of relying on a table that may be out of date.
What profit margin should an online store aim for?
It varies by category, but many e-commerce brands aim for a net margin of 10%–20% per order after all costs including ads. Products with margins under about 10% leave little room for returns, price changes, or rising ad costs.