Even with really good models you won't make hardly any money.
I know, which is disappointing really =\, was just wondering if anyone had success here.
Btw, I just finished reviewing the NewTek LightWave Tutorials "Modeling Tools" section; It's incredible, especially with the Layout program that comes with it, which allows you to make some really neat effects for your final render. I'll try to make something with it sometime soon and post it here.