i purchased a fully loaded Mid-2012 (non retina) 15" MacBook Pro today for really cheap. It works perfectly, but has extensive wear to the aluminum body and a big dent in the corner. I wanted to replace the aluminum unibody and possibly the display lid. I found some websites selling new, genuine apple parts for about $300ish (lower casing). There's also some sellers on eBay in China selling brand new parts for $99. Are these parts from China likely genuine Apple parts too? Is there such a thing as a knockoff/aftermarket casing? Not sure if I'm allowed to post links here or not...