"Textbook shopping made easy. By compiling prices on textbooks into one, convenient spot, SlugBooks provides students with the cheapest prices available - even if those prices happen to be at the university bookstore."
Consider also "international editions - textbooks that have been published outside the US. These books are usually significantly cheaper than textbooks published in the US. Offering tremendous value, international edition textbooks are created to be sold in different regions and are often printed on cheaper paper and are usually softcover. The content may be the same as the U.S. version, or may have differences such as the book cover, ISBN, pagination, or region code."
"Bookshop is an online bookstore with a mission to financially support local, independent bookstores. If you want to find a specific local bookstore to support, find them on our map and they’ll receive the full profit off your order."