Bought a pristine '87 300D with 72k in 2005 for $3500. A/C was working when I bought it, but not right now. No other issues. 120k on it now.

Just bought a perfect, dealer-maintained 2000 e320 4matic wagon with 50k for $9000. Nice car for my wife. The only thing that scares me is that it already had about $10k in service done on it before the warranty expired.