This deal has ended.
Through 7/27, Borders offers a Buy 4, Get 1 Free Deal on all books. So, for instance, buy four Stephenie Meyer books, (Twilight, Breaking Dawn, New Moon, and The Host), and get the fifth (Eclipse) for free, a savings of $11.99. Discount is taken on the lowest-priced book. Shipping is free with $25 and sales tax is charged in most states.