A bulk order is 5 or more of the same book, which earns you discount.
Bulk orders discounts (must be of the same book):
5+ books: -5%
10+ books: One Free Book (book will be the same as the 10 purchased)!
20+ books: Two Free Books (the free books will be the same as the bulk purchase)!
40+ books: Two Free Books as well as 10% off the price!
Excludes shipping fees