This is no ending : Imagine we lower the F1 price to like 11M, we would still "complain" about the fact the car do not cost only 1.5M more than the F1 GTR for exemple.The prices are now simply not realistic. A 250GTO isn't only 2M more than a Mclaren F1 in real life. So that's the whole thing out of the window, and in reality, they just made certain cars more realistic, others not.
They chose to be as realistic as possible, and if It's higher than 20M then they put it at 20M.
And if it cost more, everybody would say it's way too expensive