Yes, the price of Rhino is a real problem unless you have a professional use for it. I used it for making 3D magazine illustrations, after it passed out of its multi-year, free beta stage, and I paid what was then the full price for it. At the time I was covering CAD for a couple of magazines and the original math geek for Rhino, Michael Gibson, became my teacher about 3D. So I was into it early on.
However, it's raced past what I used to do with it, and I'm really amazed at what it can do now. If I didn't have to work I'd spend a *lot* of hours with it. It's an exciting tool.
But there are a lot of cheaper programs around now. I'm out of touch, so I don't know how the cheaper ones stack up against Rhino.
-- Ed Huntress