Purchases may be returned for any reason within 10 days. We will refund shipping return costs for media mail within the U.S. for errors of description by us. Before return, please notify us of the reason for return and for instructions especially for over the boarder customers. Item must be returned in the condition it was sent. Books are as described within accepted standards. Insurance is recommended for any shipment valued over $50.00. Books are wrapped and well packed with protection and in a hard box where appropriate. All shipments to a US Zip Code address are by media mail or first class mail with delivery confirmation. Over the boarder shipments will be via postal airmail services available. Delivery confirmation is available only when requested. Damages in transit are the responsibility of purchaser when insurance is not arranged.