Tracked by Evreward since 2005, DiabetesStore.com offers coupons, cash back rebates and rewards, with savings as high as 10% off. DiabetesStore.com discount coupons are rare, but are often more valuable than similar merchants. Even when DiabetesStore.com doesn't have a coupon, you can always get up to 4% cash back, and other great rewards, with every purchase.