As others have said as long as the progression hasn't slowed from GT5 (which it sounds like its the same so that is good) then I don't see the issue. Again for some people, well most people time is money and they won't mind paying some extra to get that one car they love. For me I always had about 20million in the bank for GT5 because I did the easy races that paid out 120k+ for a few minutes of driving.

What I would like to see back, but I doubt... is the ability to gift expensive cars. Really sucked when they made it so you couldn't trade 1million+ cars to friends.