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E-Commerce 10 April 2026 · 7 min read

Marketplace Management: Protecting Your Profit Margin on Trendyol and Hepsiburada

How do you protect your profit margin while selling on marketplaces? Commission, returns, advertising and competition strategies.

Marketplace Trendyol Hepsiburada E-commerce

Marketplaces are e-commerce's fast-growth channel. But the sum of commission and advertising costs can sometimes eat a product's gross margin. Protecting your profit margin while selling on a marketplace requires an active, not passive, strategy.

01. Understanding the Commission Structure Correctly

Trendyol commission varies between 8-25% by category. But the commission is on the VAT-inclusive amount, not the sale figure. In addition: shipping, returns, advertising. The total marketplace cost reaches 20-35% for most products.

02. Pricing Strategy

Can the same product be at a different price on your own site and the marketplace? A price difference isn't legally prohibited, but it can shake consumer trust. A sound model: a margin-narrowed model on the marketplace, a reference price on your own site.

03. Managing the Return Rate

Marketplace return rates are between 10-25%. High returns mean per-unit cost. To lower the return rate:

  • The product description must be clear
  • Size/measurement table accurate
  • Product photos realistic
  • Quality control tight

04. Ad Investment

Trendyol Ads and Hepsiburada advertising are essential in the market-share war. But advertising done without measuring ROAS (Return on Ad Spend) is a direct loss. Monthly optimization: which category, which product, which keyword is profitable to advertise on — measuring these is essential.

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