No returns will be accepted without prior authorization and none will be accepted more than 30 days after receipt of the merchandise. Factory defects are covered by the terms of the manufacturers' warranties and can only be exchanged for identical equipment. We do not accept returns on books, star charts, closeouts, opened software, or special orders.All returns must be accompanied by an authorization number and a detailed description of the reason for the return. Returns without such description may be subject to additional time and labor fees if we have to set up and operate the product to determine the reason for the return.All returns are less freight. Since all opened returned items (whether used or not) must legally be resold as used or demo merchandise, any return for a cash refund or credit against another purchase will be subject to a minimum 15% restocking and refurbishing charge or whatever cost is involved to restore the returned merchandise to salable condition, whichever is greater, in addition to the freight costs.