I bought a 1995 E320 wagon 1.5 years ago and it is one of my favorite cars of all time. I paid $1500 for it knowing that the transmission needed work. I didn't discover this forum until after I bought it. It also needed the evaporator replaced and the sls spheres replaced. I just recently found out that the wiring harness has been replaced and so far no major leaks from the head. It had 168k on it when I bought it and is now at 192k. I rebuilt the transmission myself using all MB parts for about $700 (it was my first automatic rebuild). I replace the evaporator using information found here and I love the climate control.
I have done my own work on cars for the last 40 years and this has been a very enjoyable car to work on. The evaporator replacement was probably the worst in terms of time and frustration.