If you have the space, why not?
Then again, it’ll never be as nice to drive, as economical, as quiet, or as safe as your Mercedes C270.
If you see it as just another cheap car, then don’t bother – use the Mercedes. If, on the other hand, you have a perverse attraction to mustard/beige cars and love that whole Swedish style, then get it bought.
Me? I’d not bother. I had a 245 for a while (and a 265 a bit later) and they were the Toyota of their day – efficient, solid, and dull. And really, really thirsty – even the 245 (a GLT, no less) managed no better than 22mpg as an average, and far worse on short trips. Better than the competition at the time, but that was a long time ago.
I enjoyed my two (had them in the late 80s), but I drove a 244 a couple of years back and was amazed at just how dated it felt.