Customs duties are taxes charged on imported goods. The shopper should take into account all customs fees in advance. However, if you had to pay customs duties that were not included in your reward, the shopper must refund amount spent (they can include it in the reward). If the shopper refuses to pay extra within 7 days, we'll automatically transfer the full amount to you, the product will also remain with you. In order to get the transfer, you must provide a receipt for the duty paid.