Look there is a huge market for 3d models try visiting Renderosity or Daz or even Turbosquid or Poser. Many of them either buy your designs or help you sell them. Renderers like me can't always make our own models and we relying on high quality modelers like you for scenery and props that we can use in our images. Your models are easily as good as any one else's out there and I have stripped down enough of them to know. The amount of money you could make pales in comparison to how well you would become known. Almost every 3d guy here knows who Stonemason is even if we don't know his real name. When I think of the images I could make with your super sweet models...Damn.
Hello, glad you like it. It depends really, sometimes 2 days, sometimes [when I don't have enough free time] 2 weeks, 1-2 hours every 2 days etc.. I've started using it the last summer.. More work isn't coming soon unfortunetely, I'm doing my internship and won't have any free time for 5 weeks :\