Acknowledgement from winning bidder required within 3 days. Paypal, money order or cashier's check accepted. Shipping is either USPS Priority or First Class depending on weight. Books, Magazines and CD's will be shipped media mail unless buyer requests otherwise. Extra charge may apply. Canada shipping may require additional charges. Payment is due within 10 days. If no acknowledgement and/or payment is received in time noted, negative feedback will be left.