Use coupon code BACK10 for $10 off your next order of $50 or more, BACK20 for $20 off your next order of $75 or more or BACK30 for $30 off your next order of $100 or more online at HPB.com only from 12:01 AM 8/19/2019 - 11:59 PM 8/25/2019 CDT. Limit one use of each coupon per account. Not valid during sales or in combination with any other discount or coupon. No adjustments made to prior orders. Subtotal must meet minimum order requirement before tax and shipping for coupon to apply. Cannot be used to purchase gift cards. Not valid at Half Price Books retail stores or Half Price Books Outlet locations.