How to Price Products Online: Fees, Margin and Markup for eBay, Amazon and Etsy Sellers

Many new online sellers price by feel: they look at what others charge, shave a little off, and hope. A few months later they notice that busy weeks barely cover costs. The reason is nearly always the same. Marketplace fees, shipping, packaging and advertising quietly take a larger slice than expected, and the "profit" they thought they were making was never there.

This guide shows a repeatable way to price products on eBay, Amazon, Etsy or any other marketplace: list every cost, understand how fees really work, separate margin from markup, and find the break-even price before you decide what to charge.

Step 1: List every cost per unit

For one sale, write down:

Item cost: what you paid for the product, including freight to you and any import duty.
Outbound shipping: what you pay the carrier to send it.
Packaging: box, filler, labels, tape. Small, but across hundreds of orders it matters.
Marketplace fees: commission, per-order fee, payment processing, listing fee.
Advertising: sponsored listings or search ads, as a share of the sale price.
Returns and breakage: not every sale sticks. A 3% return rate is a real cost.
Your time and software costs, if you want a true picture.

Taxes such as sales tax or VAT and your income tax sit outside this list, but plan for them too.

Step 2: Understand how fees really work

Marketplace fees usually combine a percentage and a fixed amount. Three things catch sellers out.

The percentage is often taken from more than the item price. On eBay, for example, the final value fee applies to the total the buyer pays, which includes shipping, not just the item price. Etsy's transaction fee likewise applies to item price plus shipping. So charging the buyer 5 for shipping increases the fee you pay.

Fixed fees weigh more on cheap items. A per-order fee of 0.30 to 0.40 is a rounding error on a 200 sale and a big bite out of a 5 one.

Fees stack. Etsy, for instance, can charge a listing fee, a transaction fee and a payment processing fee on the same sale, and an advertising fee on top if the order came through offsite ads. On Amazon, the referral fee, the fulfillment fee and storage all apply.

Fee rates differ by category and country and change from time to time. The rates in this article are examples. Always confirm them on the marketplace's own fee page.

Step 3: Separate margin from markup

These two numbers describe the same profit differently, and confusing them leads to underpricing.

Markup = profit ÷ cost.
Margin = profit ÷ selling price.

If you buy something for 60 and sell it for 100, your profit is 40. Markup is 40 ÷ 60 = 66.7%. Margin is 40 ÷ 100 = 40%.

Suppose you want a 40% margin and think "I'll add 40% to my cost". That gives 60 × 1.40 = 84, where profit is 24 and margin is only 28.6%. To hit a 40% margin, you must divide, not multiply: price = cost ÷ (1 − margin) = 60 ÷ 0.60 = 100.

Because fees also take a percentage of the selling price, margin is the number to watch. It tells you how much of every sale you keep.

Step 4: A worked eBay example

Take a pair of sneakers:

Selling price: 50. The buyer also pays 5 shipping.
You paid 20 for them. Shipping to the buyer costs you 5. Packaging is 1.
Fee assumption: 13.6% of the total (item plus shipping) plus a 0.40 per-order fee. Treat these as illustrative.

Revenue = 50 + 5 = 55. Fees = 13.6% × 55 + 0.40 = 7.48 + 0.40 = 7.88. Costs = 20 + 5 + 1 = 26. Profit = 55 − 7.88 − 26 = 21.12.

Margin = 21.12 ÷ 55 = 38.4%. Return on cost = 21.12 ÷ 26 = 81%.

Looks healthy. Now add 8% advertising on the item price (4.00) and a 3% return allowance, and the real profit drops to roughly 15.50 and margin to about 28%. The first number was true, but incomplete.

You can run your own version in the eBay fee calculator, the Amazon FBA calculator or the Etsy fee calculator, or use the general marketplace profit calculator for any other site.

Step 5: Find the break-even price

The break-even price is the lowest price at which you make exactly zero profit after all costs and fees. It is your floor. Anything below it loses money.

Because fees depend on the price, you solve for it rather than guess. With the example above: if profit = 0.864 × price − 22.08 (after fees and costs), then break-even price = 22.08 ÷ 0.864 ≈ 25.56. Never accept an offer below that.

A calculator that supports a "target margin" does the same algebra for you. Enter the margin you want, for example 30%, and it returns the price to charge. In the example above, that price comes out near 41.81.

Step 6: Decide on your target margin

What is a good margin? It depends on the product, how much work it needs and how much competition there is. A rough guide many sellers use:

Under 10% after all costs: too thin. One return or a price drop wipes you out.
15% to 30%: a common range for products you source and ship yourself.
Above 30%: usually brands, handmade goods or niche items with little competition.

Low-priced items usually need a bigger percentage margin to be worth the effort, because fixed fees and shipping take a larger share.

Common pricing mistakes

Ignoring fees on shipping. If the percentage applies to the shipping you charge, include it.
Forgetting advertising. If you rely on sponsored listings, treat the spend as a cost of every sale.
Matching the lowest competitor. The cheapest seller may have lower costs, or may be losing money. Compete on your own break-even.
Pricing before sourcing. Check margin before you buy stock, not after.
Forgetting taxes. Sales tax collected on behalf of the buyer is not your income, and your profit is taxable.
Using old fees. Marketplaces adjust their fee schedules. Review yours every few months.

A simple routine

Write the full per-unit cost list.
Enter the current fees in a calculator.
Look at the break-even price and the margin at the price you are considering.
Add a safety buffer for returns and advertising.
Set the price, then review it when fees or your costs change.

Pricing is not about guessing what the market will bear. It is about knowing the lowest price you can afford, and then choosing how far above it you can sell. The tools make it a two-minute job, and they can save you from a product that sells well and still loses money.

This article is general information and an illustration of the arithmetic, not financial, tax or legal advice. Marketplace fees change often. Check the official fee pages before you rely on any figure.