The return is the responsibility of the buyer, and the returned part will be checked before the exchange The seller will bear the shipping costs of the exchanged part Payment: PayPal or invoice. Payment by invoice must be received within 7 days or the item will be relisted. Shipping: Buyer pays all shipping costs. We ship via UPS unless buyer requests otherwise. Please send us an e-mail to request the shipping costs outside Europe. Return policy: Returns are accepted within 7 working days after receipt. If possible the goods are exchanged with an duplicate from our stock. If exchange is not possible customers will receive their money back. The serial number on the returned item must be the same as the serial number on the packing list. The buyer is responsible for the return shipping.