Tracked by Evreward since 2007, TextbookFlix offers coupons and cash back rebates, with savings as high as 5% off. TextbookFlix discount coupons are somehwat rare, available a few times each year, but are often more valuable than similar merchants. Even when TextbookFlix doesn't have a coupon, you can always get up to 30% cash back, and other great rewards, with every purchase.