商品退款：如果您针对已收到付款的某件商品发起了退款，则亚马逊将向您收取退款全部金额以及退款管理费，并减去该订单任何适用的销售佣金费用。例如，如果某一商品分类的销售佣金为 15%，而您要对总销售价格为 10.00 美元的商品向买家退款，则您将看到 8.80 美元的扣款（10.00 美元的总销售价格 + 0.30 美元的退款管理费 - 1.50 美元的销售佣金）。有关退款管理费的更多信息，请参阅亚马逊服务商业解决方案协议。
Why do I have a negative balance?
Your seller account may have a negative balance if the amount of fees you owe and refunds you have issued exceeds your sales during a settlement period. Your Payments Report provides a detailed summary of all credits and charges applied to your account.
Fees: Fees differ depending on your seller type, the items you sell, and the services you use. You can see order-level details of fees you have incurred by going to the Transaction View tab of your Payments Report and clicking on an order total amount. You can also refer to the Amazon Services Business Solutions Agreement and the Selling on Amazon Fee Schedule for information on fees associated with your seller account.
Product refunds: If you issue a refund for a product for which you have already received payment, Amazon will charge you the full amount of the refund, plus the refund administration fee, minus the cost of any applicable referral fees from the order. For example, if you refund a customer the $10.00 total sales price of a product in a category with a 15% referral fee, you will see a charge for $8.80 ($10.00 total sales price + $0.30 refund administration fee - $1.50 referral fee). For more information about refund administration fees, please refer to the Amazon Services Business Solutions Agreement.