Dear Customers, It is USD$1 per piece. Please choose the quantity according to the amount you need to pay. For example, if you need to make up the difference of USD$1, please pay for 1 piece, which is USD$1. If you need to make up the difference of USD$3, please pay for 3 pieces, which is USD$3, ect. When you place your order, please specify the item you want. If you have questions, it is best to communicate with customer service in advance via ticket, email or tidio. Thanks.
