Tracked by Evreward since 2016, ECKO UNLTD. offers coupons and cash back rebates, with savings as high as 60% off. ECKO UNLTD. discount coupons are somehwat rare, available a few times each year. Even when ECKO UNLTD. doesn't have a coupon, you can always get up to 15% cash back, and other great rewards, with every purchase.