Looking at comparables with similar mileage they seem to be selling (listing price anyway on dealer lots) for 17 to 18 thousand. Assuming the one you're looking at is in nice shape and well maintained I'd say its a fair deal. Get it checked out independantly at a good shop, even if you must pay a hundred bucks or so yourself it may be worth it to find out the transmission or other major component is on its last legs so you you can possibly renegotiate or cancel the sale. Ask for maintenance records,......and get insurance quotes .