Domestic shipping is $3.75 for media mail (take 4-15 days). If book fits into a priority mail flat rate envelope, the cost is $6.00, otherwise it is $11.00 (takes 2-5 days). Multiple volumes or heavy books will cost more. We ship internationally. If the book fits into a priority mail flat rate envelope, the cost is $13.50, otherwise, the cost is based on size and weight. We will hold a book for 10 days. Books may be returned within 10 days. Massachusetts residents will be billed 5% sales tax.