I will be buying my first 'serious' bike within the next week, and have focused on the Trek 7.2 FX or 7.3 FX (to me, those are serious bikes). I came across an ad on craigslist for a 2008 'Like New' Trek 7.3 FX for $299. The seller claims he only rode it a couple of times. Trek's website lists that model at $639. I was even able to get the seller down to $275 , and will probably be able to meet him tonight to make the purchase. To me, this seems too good to be true. Is it? Am I potentially buying from a thief? I don't want to buy stolen property- it would suck if someone stole my bike and sold it on craigslist. And thieves don't deserve my hard-earned money, no matter how low the price. I don't have enough bike-knowledge to know if this kind of price drop is common or if it really is sketchy and too good to be true. Any advice?