Tracked by Evreward since 2005, LAMPS PLUS offers coupons, cash back rebates and rewards, with savings as high as $75 off. LAMPS PLUS discount coupons are seasonal, appearing every three to four months, but can be less valuable than similar merchants. Even when LAMPS PLUS doesn't have a coupon, you can always get up to 10% cash back, and other great rewards, with every purchase.