Like the promotion - Seller Center Why do you have to be a Seller Center and like a promotion? · Safe for both customers and carriers - every step is done through the app. Customers will not be scammed of their money. Because I transferred the money and put it in the place that I liked with the promotion first. As for the carrier, they will not be canceled after purchasing the item. Because once you transfer money, you can't cancel. · Set your own price - The carrier can set the price for ca