It's my impression that the price announced for a used plane is often above the actual value of the plane. It seems to be part of the game...
If you want to buy this plane, you must remember to inspect the plane prior to signing any contract. When inspecting the plane you check the infos given by the owner and also check for corrosion and other things that will cost you money if the plane is going to fly.
If you do not know how to perform a check, you can hire an expert. Aircraft appraisal is the term often used about this service.
If you buys this plane (I understand your feelings), I wish you well.
Yours in realtime
Look at me, I´m riding high, I´m the airbornmaster of the sky...