I just want it to run mainly.
I am not sure there's any such animal. I mean, if you just want a car to go from a to b perhaps buy a chevy. I am not trying to discourage you, however, $1500 is nothing compared to what you may have to spend getting an old mercedes to reliable driving condition and keeping it there. If it's a second or third car, then I'd say fine but if it's your daily driver- watch out. These cars can suck you in like a frog in a frying pan. Before you know it, you are up to 10k + in no time with no way to get your money back on the "investment" of those hard earned dollars...