5 1 is better than Bought.com, a 6-or 7-year-old rebate website. I used it for 2 years, but I haven't used it for more than a dozen times. There has never been a case of losing the bill, and the rebate is timely. At the same time, the rebate rate of 5 1 is higher than that of Buyou. I have compared the rebate rate of several e-commerce websites I visit frequently on some rebate websites, and 5 1 is higher than Buyou.