If prices are too good to be true, then it needs no further explanation. Really depends on what you wanna buy. If you are looking for Yonex rackets, basically SP is cheaper than CH and very slight superior quality too. There are many sellers there who have good contacts for JP stuff.
If you live in HK I'd buy from Wongor at e78.com: http://e78.com.hk/ Homepage is not very impressive, but **** is legit and prices are good.
and you can buy CH here http://xj-sport.taobao.com/ buy TW or SP here http://shop36798949.taobao.com/
Yes, they are genuine. Because Badminton is really popular in China, but you can buy fake badminton if you want cheap price. However, i often buy Badminton from LiNing company, because their quality is good. Also it is really reliable to buy from smalltao.com. I like their service soo much!!
i bought both my Yonex VT-5 and Victor Super Nano 7 from taobao, both seem to be legit, it is something you have to risk, i heard even the so-called authorized retailer can be selling counterfeit products 1. a lot of people would suggest you to buy in HK if you live closer enough like i do 2. taobao is just like EBAY, check the seller's feedback 3. i can tell you which seller i bought from in pm