I've just wandered around in
www.autoscout24.com and found these two examples:
1. B10 Biturbo 1994 100,000km Eur 25,500
2. B8 4.6 sedan 1995 79,000km Eur 23,900
Both cars are rare, both cars have Alpina blue color, the Biturbo is a bit too expensive for the year & mileage I guess but I personally choose a Biturbo....
BTW you guys in Europe are lucky. Eur 25,000 CAN get you nice cars. In my country that sum of money can only get me a 1997 bmw 323i automatic
Cheers,
Taffy