Tracked by Evreward since 2012, Yumi Kim offers coupons, cash back rebates and rewards, with savings as high as 30% off. Yumi Kim discount coupons are rare, only available once or twice a year, and can be less valuable than similar merchants. Even when Yumi Kim doesn't have a coupon, you can always get up to 10% cash back, and other great rewards, with every purchase.