up to 4.9%
Petro Rewards

BiggerBooks is a premier online textbook vendor specializing in highly discounted books and textbooks. They offer savings of up to 91% over list prices by scouring prices across the web. BiggerBooks makes it easy to buy or rent your textbooks, so students can focus on what matters most: studying.
Conditions

Earn 4.9% on rentals. All other purchases earn 3.5% cashback.

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