On my previous file, where I used B-spec mode to frequently run the DTM championship in the European Hall (and sell the 743k prize car), I had an average of about Cr.4,000,000. On my current file, however, A-spec is the only means I've set myself to race with and thus successive races in the second event of Special Conditions (selling the prize car at 268k) has gathered me about Cr.1,200,000.
Note: I just bought a 1.2m 2J race car to gather 200 A-spec points per race in the World Championships (professional hall) so I now have a grand total of Cr.150...