The campaign participation fee is the discount obligation a marketplace requires from a seller joining its promotional campaigns, on top of commission. It is usually applied as an additional discount of a set percentage of the product price, or as a fixed participation charge, and it stacks on top of the commission.
On Trendyol and Hepsiburada, campaign invitations arrive in the dashboard through a bulk approval screen. Approving in bulk pulls low-margin products into the campaign too, and the loss grows as sales rise. The right method is to calculate contribution margin per product before the campaign and tick only the SKUs above the threshold. Because the participation fee can stay with the seller on returned orders as well, the impact doubles in categories with high return rates.
Net after campaign = Sale price - (Commission + Participation fee + Shipping + Product cost)
A 400 TL product with 18% commission and a 10% campaign fee leaves 400 - 72 - 40 = 288 TL gross; if cost is 250 TL, the remaining 38 TL does not even cover shipping.
On Trendyol and Hepsiburada, campaign invitations arrive in the dashboard through a bulk approval screen. Approving in bulk pulls low-margin products into the campaign too, and the loss grows as sales rise. The right method is to calculate contribution margin per product before the campaign and tick only the SKUs above…
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