Anyone buy things from Amazon before? I find that the shipping fee like abit expensive or is it reasonable ? Can share your experiences with me~ TIA

Hello friends. Amazon sells a great number of its products, but many of them are not labeled as Amazon. There is an ACoS formula. You can find out more here https://sageseller.com/blog/what-is-amazon-acos-and-how-to-easily-calculate-it/ . This unique profit formula. This makes it easier for you to track all expenses and get an idea of the amounts.