We currently own a 1989 420SEL(close to 200k mi), but we need a 'new' car. I know someone who wants to let go of their 1992 Dark Blue 500SEL with only about 40k miles on the odometer. It was mostly driven in hawaii, then was shipped to southern california over a year ago and has not seen much of the road. And it is in excellent condition. The asking price is 25k.. and I think its negotiable. Is that a good deal? What is a good deal? And should I bite? Thanks a lot for the advice.