I have to agree with the advice that good cars are out there, you just need patience. I spent months looking for the 1988 300E we now have, as I was looking for a car with a manual transmission and knew they were pretty rare. I finally found one and had to go to Salt Lake City to pick it up and then drive it home (from Connecticut). Got lots of photos of it, did a CarFax (thanks to a generous site member's offer) and then called the owner and negotiated price.
Turned out to be a car with under 95,000 miles that was rust free, and mechanically near perfect with a like new interior. The owner reported the trip odometer did not work and the passenger side front door window did not work. As it turned out the trip odometer did not work because he was resetting it with the wrong button, and yes, the window needs a new motor. In 12,000 miles since picking it up, it has had a 4 oil changes and uses no appreciable oil in the 4,000 mile intervals (Mobil 1 0W-40, and now Mobil Delvac 1 as I have found a good source for that stuff in bulk buys and I use it in my Diesels).
So, be persistent and stick to your goal of finding a great car that has been cared for and is in great condition at the right price. Good luck, Jim
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)