Receive 40% off List Price of One Book at Borders with this Printable Coupon. For online purchase, use promo code BSA1671X. Valid through 10/12. Here is a screenshot for your reference. While it says valid with Borders Rewards membership only, we have never been asked to provide a Borders’ membership card or number. The membership is a free instant sign-up if needed. Find a Borders store near you.