How to Price Products After Platform Fees

Cost of goods is not the full cost

A product can look profitable if you only compare selling price to product cost. The real margin often changes after platform fees, payment fees, shipping supplies, shipping subsidies, returns, and advertising.

Good pricing starts with a full cost stack. If you sell through Etsy, Shopify, eBay, or paid ads, include those costs before deciding whether a product is worth selling.

Common selling costs

Example: price after fees

A seller buys a product for $14 and wants a 40% net margin. They plan to sell through a platform with a 10% fee, a 3% payment fee, $0.30 fixed processing, $5 shipping support, and $4 average ad cost.

A $35 price may look strong before fees, but after platform fee, payment fee, shipping support, ad spend, and product cost, the real profit can be far lower than expected. The price may need to be raised, the ad cost reduced, or the product dropped.

A common pricing mistake: anchoring to product cost alone

Many sellers set a price by doubling or tripling the product cost and stop there, without checking whether that markup actually survives the fees that apply once a sale happens. A product with a healthy-looking markup on paper can still lose money once payment processing, platform commission, and shipping subsidy are subtracted.

The fix is to work backward from a target net margin instead of forward from product cost. Decide what you need to keep per sale, then add every fee that applies before arriving at the price you need to charge, rather than hoping the markup you chose happens to cover them.

When a low-margin product still makes sense

Not every product needs to hit the same margin target. A low-margin item that reliably brings in repeat buyers, fills out a bundle, or improves your ranking or visibility on a platform can be worth carrying even at thinner margin, as long as you are making that decision deliberately.

The risk is carrying a thin-margin product without realizing it, because nobody modeled the fee stack. Decide on purpose which products are margin leaders and which are volume or visibility plays, and revisit that list periodically as fees or ad costs change.

A worked example: reverse-engineering a target price

To net $20 profit on a product that costs $15 to make and ship, sold on a platform with a 12% commission plus a 3% payment fee, the price needs to cover cost, profit, and 15% in combined fees. Solving for price: (15 + 20) divided by (1 minus 0.15) equals $41.18, rounded to $41.99 for a cleaner listing price.

Working backward from the target profit like this, rather than adding a flat markup to cost and hoping fees do not eat too much of it, is the more reliable way to hit a real margin target on a fee-heavy platform.

Price testing without a race to the bottom

Matching a competitor's price without knowing their cost structure is a common mistake, a competitor selling at volume through a cheaper fulfillment method can profitably charge a price that would lose money for a smaller seller. Price against your own margin math first, and treat competitor pricing as one input, not the deciding one.

Rechecking prices when fee tiers change

Platforms periodically change commission percentages, category fee tiers, or payment processing rates. A price set correctly a year ago can quietly become underpriced if fees crept up in the meantime. Revisit the fee-adjusted margin on core products at least twice a year.

Bundle pricing changes the fee math

Selling two items together as a bundle usually means paying the platform's commission once on the combined price rather than twice on two separate transactions, which can meaningfully improve the effective margin compared to selling the same items separately. Run the bundle price through the same fee-adjusted formula used for single items before assuming the bundling discount offered to customers is still profitable.

A quick pricing review habit

Twice a year, rerun the fee-adjusted margin formula on core products using current commission rates and current cost of goods, since both tend to drift upward over time and a price that was correctly set a year ago can quietly fall short of the target margin today.