[speeder]

That looks like a pretty clean example. I've owned several of that exact model, it could be a good car for you depending on many "ifs":

-If you can work on it yourself and you are really good with carburetors. It has dual 2-barrel carbs w/ a lot of vacuum-control aspects, this was the early times of smog regulations changing quickly in CA. and even mercedes was struggling to make their remaining carburetor cars compliant. It no longer needs to be smogged but that has nothing to do with getting it running well. You are not going to modify it, (that would be an entire other can of worms and destroy ANY value the car has), you need to get it back to mechanically original and perfect condition. Believe me. I've done it with the exact same car.

These were good cars, (as are all Mercedes from the era), but they were the cheap cars in the line. Everything else was injected or diesel (injected). They do not have a real financial upside in terms of dropping $$ into them. Notice that I am not telling you not to buy the car, it's a clean one. If these are in average/worn-out/edgy condition, they are worth nothing. Scrap metal.

-If the car checks-out, obviously. If it's not running well at this time as the ad says, I'd want to do a compression test at least and a leak-down if possible. If the engine is tired, forget it.