The coupon is good only if you are a member of Borders Rewards, the bookstore's free loyalty program. You can join online or in stores. Expect to get about two e-mails a week from Borders, often with coupons. Not a bad trade for extra e-mail.
Caveats: cannot be combined with any other offer, promotion, sale pricing, coupon, or discount, including group discounts. Excludes previous purchases, special orders, shipping, gift cards, coupon books, newspapers, magazines, comics, eBooks, digital downloads, vinyl LPs, Smartbox products, Rosetta Stone software, tax software, video games, and all electronics.
Online the Borders coupon expires at 11:59 p.m. PST on May 1.