Inside the United States: For Book Rate, add $1.80 for the first book and 30 cents for each additional book (delivery may take up to four weeks). For First Class, add $3.50 for the first book and 60 cents for each additional book.
Outside the United States: For Book Rate, add $3.50 for the first book and 60 cents for each additional book. For Air Mail, add $5.00 for the first book and 75 cents for each additional book.
Add 6.95% for each book shipped to an Arizona address. No sales tax is required for books shipped outside the U.S. or to states other than Arizona.
Orders of 3-9 books, deduct 10% from cost of books
Orders of 10-19 books, deduct 20% from cost of books
Orders of 20+ books, deduct 25% from cost of books
(NOTE: To correctly compute the amount to send, these discounts must be taken before adding the shipping charges and sales tax.)