Add this product to your order if you are requesting international shipment of 2 to 5 books. Do NOT add this if you are ordering a single (1) copy for international shipment.
For > 5 books, make multiple orders with up to 5 books each. Basically, if you order a single book, the default shipping calculation method applies. Your single book will come in a flat rate envelope. The vast majority of orders are that simple. If you order 2-5, a medium flat rate box will be used. This supplement is to accommodate the difference in price between those two shipping options.
I apologize for any inconvenience. Shipping can be a hassle due to the myriad of options available from USPS. Before you ask, UPS/ Fedex/ and DHL are supremely expensive. I have searched up and down for the lowest rates, and USPS is the best deal.
Update November 2021 – The cost of USPS international shipping has increased, so the cost for this supplemental shipping has increased as well. The service has been very reliable to date.