I used to buy things on Taobao etc, and every time I don't know whether the product is genuine or fake; also don't know the quotations from other shopping malls. It's such a hassle to find out. Today my buddy in the dormitory said that www.huigou100.com has products from 500 shopping malls. One can intuitively compare prices for the same product. Moreover, as long as one buys products from other shopping malls with a membership identity, they will give cash back. For example, Taobao gives up to 35% cash back... Looks like I've spent quite a lot of money before. Therefore, I highly recommend it.