U.S. postage is $6.50 for the 1st title/volume and $2.00 for each additional title/volume and are sent Media Mail, Insured (except for sets and oversized items, which are calculated on a per order basis). Express mail, overseas rates and special handling are available on request. Payment is expected in advance by all but institutional buyers unless arrangements are made in advance. All orders are shipped via the United States Post Office or FedEx unless otherwise requested. Maine residents must add 5.5% sales tax unless a resale or tax exemption certificate is sent. Items are returnable within 10 days if not as described for full refund. Any other return is handled on a case by case basis, our goal being the complete satisfaction of all parties involved. If you have any additional questions or concerns, please contact us at http://www.luxmentis.com.