Tracked by Evreward since 2009, GlassesShop offers coupons, cash back rebates and rewards, with savings as high as 90% off. GlassesShop discount coupons are somehwat rare, available a few times each year, but are often more valuable than similar merchants. Even when GlassesShop doesn't have a coupon, you can always get up to 17% cash back, and other great rewards, with every purchase.