I'm looking to get one of these so I can use my wireless 360 controller on my PC. Amazon has it for around $30 (I'd rather buy another controller at that price!), and it's going for around $10 on ebay. Now, all the cheap ones on ebay seem to come from China which has me thinking they are knockoffs s Has anyone ever ordered products like this from China?? I don't wanna spend more than $15 but I also dont wanna end up with something that could turn up useless...