These models are rare by now, although being one of the most produced models by Mercedes.
Either they are a mess but still running or they are in mint condition and fetch premium prices. The good used unit seems to be gone from the market these days.
I compiled this short video to show the weak spots of this model and what to expect cost wise if things do go south...
And a strong word of caution for buyers who are blinded more often than not by a shiny paint job.