Same problems with GT3 when it came out comparred to GT2 - prices for tunning had shot up and in GT2 it was really easy to earn credits comparred to GT3!

Less gains from more expensive tune ups, and in GT3 there weren't even a second hand section!

I think the idea is to make the game tougher and tougher, so you have to do more racing and win more to make more credits so you can afford the tuning gear. But instead of being able to make stupid power figures no one can keep up with (like GT2 : 1300bhp Skylines ) YOu have to put more effort and control into your driving to win rather than relying on the engine (and how many people just used the Suzuki Pikes Peak thing to win everything even tho it didn't steer for shit - didn't matter, just bouce the fooker off walls and still win )