Should I be worried about buying a car far under market value?

Saw a 2007 Toyota Corolla from a private dealer with 130k miles for 2000 dollars. I would figure that even if, say, a head gasket was blown, spending 1000 to get it replaced would still put this car under fair market value. But I'm worried that the fact that he's selling it so low means something is... show more Saw a 2007 Toyota Corolla from a private dealer with 130k miles for 2000 dollars. I would figure that even if, say, a head gasket was blown, spending 1000 to get it replaced would still put this car under fair market value. But I'm worried that the fact that he's selling it so low means something is seriously wrong with it. Or maybe I'm just being paranoid?
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