I've been looking at geting a trek 7.5 lately and this just popped up on craigslist. It's a 2006 7.5fx. Anyways, they said it only has 18 miles on it. Is $400 a pretty good deal? I can either get this or buy a new 2011 model for 500 more. Shew that is a lot. Would I be making a wise choice to just get this one off this guy? It's a 20' which is my size. Is there really a $500 difference in this model than the newer one? Here are some pics.