Tracked by Evreward since 2011, Greeting Card Universe offers coupons, cash back rebates and rewards, with savings as high as 25% off. Greeting Card Universe discount coupons are somehwat rare, available a few times each year, but are often more valuable than similar merchants. Even when Greeting Card Universe doesn't have a coupon, you can always get up to 8% cash back, and other great rewards, with every purchase.