Use coupon code LEARN20 for 20% off your order online only at HPB.com from 12:01 AM 7/13/2020 CT - 11:59 PM 7/19/2020 CT. Limit one coupon per account. Not valid during sales or in combination with any other discount or coupon. No adjustments made to prior orders. Cannot be used on single items priced at $300 or more, pretax. Cannot be used to purchase gift cards. Not valid at Half Price Books retail stores or Half Price Books Outlet locations.