Popular on Evreward since 2011, RiteAid.com offers coupons, cash back rebates and rewards, with savings as high as 20% off. RiteAid.com discount coupons are seasonal, appearing every three to four months, but can be less valuable than similar merchants. Even when RiteAid.com doesn't have a coupon, you can always get up to 16% cash back, and other great rewards, with every purchase.