Trendyol, Hepsiburada and Amazon operations, stock and price synchronisation, and advertising strategy.
Account types on Amazon Turkey, the 99 TL monthly fee, the 1% withholding deduction, FBA versus FBM, and the checklist to complete before your first sale.
Hepsiburada Buy Box criteria, the 9.0 store score threshold, how the fixed transaction fee constrains price competition, and a five-step diagnostic when you lose it.
Seller score criteria, how the Buy Box works, real profit after commission and shipping, and a weekly operating rhythm — a Trendyol store management guide with actual numbers.
What overselling costs your seller score and Buy Box, using webhooks alongside polling, buffer stock strategy, and why price should differ per channel.
The ROAS in your panel can hide the fact that you are losing money. How to calculate break-even ROAS, which threshold turns advertising into a loss, and how to manage campaigns weekly.
A comparison of Trendyol, Hepsiburada, N11 and Amazon commission rates, the hidden service fees, and the real margin formula including returns and advertising — with two worked examples.