I'd put strength/fitness and (in racing) skill at 10, all the other things, including $$$ spent, at 7.
HOWEVER, I'm figuring HOW $$$ is spent, not how much. If you don't spend anything at all, not even lube for your chain, you'll soon fail, and if you spend all your money (and time, and mental energy) on fancy gear, you won't get anywhere, either. It's important to make prudent investments.