Customers must notify AutoTransponder of any errors in the items received within 30 days of purchase. AutoTransponder.com guarantees that you will receive the correct item(s) that you have ordered. We are not liable for purchases made in error. Such purchases may be returned or exchanged if they are uncut and/or unprogrammed. Cut and/or programmed items cannot be returned. Shipping costs will not be refunded for customer error returns or exchanges. If it is found that you were sent the incorrect item by our mistake, a refund or exchange may be issued when the item is returned to us. Return labels are available on request.