Hi, looking to sell my Mid 2010 iMac. (3.06GHz i3 4GB 1333) How would I go about valuing it? It's in almost new condition, only reason I say almost is because of a small scratch on the back of the stand which I've no idea how it got there. Other than this there is no other mark on it! I've been watching a few on eBay however some sell for little to nothing and others almost fetch original retail value! I have no intention of selling it on eBay, will look at other selling options. Thanks, Lee.