As an auction platform, StockX will charge a transaction fee for each transaction. But the more products you sell on StockX, the more you can save! Improve your "seller level StockX" to reduce the transaction fees charged. In addition, there is a prepayment plan, which is an incentive for eligible StockX sellers (who have successfully made 100 sales in 12 months and over $ 25,000 in sales) to receive more cash. soon after sending the goods.