Which setup is generally more profitable?

It depends on margin drivers beyond fees, especially sourcing price, return rate, shipping profile, and sell-through speed.

What is the most common mistake?

Sellers often include obvious platform fees but miss payment handling, packaging, returns, and operational time cost.

Depending on your setup, fee structure, obligations, and process costs differ. In practice, use one consistent calculation model per setup.

Cost block	Private	Business
Platform and transaction fees	simpler, often flatter	more granular, category-sensitive
Operational overhead	lower	higher (returns, support, compliance)
Risk of miscalculation	medium	high if side costs are missing

Depending on your setup, fee structure, obligations, and process costs differ. In practice, use one consistent calculation model per setup.

Cost block	Private	Business
Platform and transaction fees	simpler, often flatter	more granular, category-sensitive
Operational overhead	lower	higher (returns, support, compliance)
Risk of miscalculation	medium	high if side costs are missing