It's dirt cheap for a reason Slappy. Beware if you buy it as there could most likely be trouble down the road. The resale value of those cars is poor. If you do buy it, remember down the road that you bought it against doglover's advice.
It's dirt cheap because it's an oddball car...they can't give them away new, so they depreciate fast. Still has great reliability ratings and gets excellent reviews all around. The market is very limited on 2-seat sport coupes(especially in New England) and they just don't sell a ton of them. Plus it's a stick, and most of the buyers of this particular car buy auto.
When I say "dirt cheap," I mean it's $2-3 grand less than what it should be, not 50% off or something ridiculous. Coupled with the very low miles and what they go for new, it's a steal.
I hear you on the beware, but the powertrain in that car is proven through Mercedes, as they've used it in their cars for years. It's Mercedes bread and butter powerplant.
If there's a major problem with the car, then shame on the dealership.