Multiple purchase orders may be used, but each purchase order number must meet our minium requirements - purchase orders may not be combined to meet our minimum requirements. We do not accept purchase orders from noneducational entities, educational institutions, or libraries not located in the United States. Please include an email address so that we can inform you if your PO does not meet our requirements - if not, you will not be notified. We reserve the right to refuse any purchase order. We have revised how we determine shipping charges to reflect January 2001 postal increases.
All prices quoted are in U.S. dollars.
All orders for delivery in the US are shipped by US Priority mail unless the order is mainly books. We may ship purchase orders by parcel post depending on weight. Please contact us if you need faster delivery. Additional charges may apply. Keep in mind that if you take a day or two to contact us to get next day or two day delivery, then it might have been faster to just place the order and have us ship priority mail anyway.