Borders: 40% off Coupon! September 14, 2010 This post may contain a link to an affiliate. See my disclosure policy for more information. Borders has a great new high value in-store coupon: Save 40% off the list price of any one item! This coupon is only valid through 9/16. You must be a Borders Rewards Perks member to use this coupon. Thanks, Hip2Save!