That is really a nice car. Those 140's are probably the best thing MB ever built, even better than the SL I traded mine for. I think the price is kind of high though. Check out
www.kbb.com, and
www.nada.com for retail/wholesale values, try to find a price between the two. That is a $75,000 car new, but I have seen them go for less. Good luck! and take your time shopping, and try to get a one owner from a state where there is no rust.
Best Regards,
Brian