In order to collect any bump fees, shipping label fees, selling fees, or other Reverb fees that can't be deducted from your payouts, Reverb requires a credit or debit card on file with your account as a seller.
To adjust your billing preferences or change your billing card on file, head to your My Bill page. Your credit card is charged at the end of each month for any outstanding fees.
In addition, we need a valid credit/debit card on file in the event that a refund is issued on an order. As a seller, once a refund is issued, the refund goes as a negative balance on your Reverb account for 14 days and then is billed to this primary billing card. For more information, check out this article about How to Issue a Refund on an Order.