Use your promo code at checkout to get a free used book (valued at $7 or less) every time you buy four or more used books. That applies for every set of four used books that is purchased:

Buy…

Get…

4 used books

1 used book free

8 used books

2 used books free

12 used books

3 used books free

16 used books

4 used books free

20 used books

5 used books free

  • Used book value up to $7

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