I sell on online marketplaces but my profit margin disappears, why?
Direct answerWatching your margin disappear on a marketplace usually happens because of commissions and fees not factored into the price, shipping and returns weighing more than they seem, price competition with many sellers, and total dependence on the platform. The first step is to calculate the real profit on each product after all fees.
How it shows up
Order volume is good, but when you add everything up, very little or nothing is left. It feels like you're working for the platform.
Most likely root causes
- Underestimated feesCommissions, fixed fees, ads, and payment processing fees aren't fully built into the price.
- Shipping and returnsLogistics costs and returned products eat into the margin.
- Price warsMany sellers offering the same product push prices down.
- Dependence on one channelAll sales go through a single platform that sets the rules.
Quick self-check
- Do you know the real profit on each product after fees?
- Do you include shipping and returns in your calculations?
- Do you sell products identical to those of many competitors?
- Do you have a sales channel of your own?
If you answered yes to two or more, start with that cause.
First step today
Take your five best-selling products and calculate, one by one, what's left after product cost, commission, fees, shipping, taxes, and returns.
30-day plan
- Week 1: calculate the real margin per product and identify those that lose money.
- Weeks 2 and 3: adjust prices or drop items with no margin, prioritize products that stand out, and review packaging and shipping costs.
- Week 4: evaluate the results and start building your own channel for past customers, without abandoning the platform.
When to seek professional help
Talk to an accountant to correctly calculate the taxes on your marketplace sales. A local small-business support center can offer guidance on e-commerce.
Frequently asked questions
- Is it worth leaving the marketplace?
- Not necessarily. It can bring volume. What matters is that every sale is profitable and that you don't depend on it alone.
- Should I sell at the lowest price to get noticed?
- Selling below a healthy margin only increases the volume of losses. Compete on what makes you different instead.