What is a good, cheap, 3D part modeling program?

I need a program to design 3D parts, if I had a few thousands of dollars budget, I would of purchased Inventor or Solidworks but they are much too expensive.
Searching the web I only found all kinds of open source programs that are not "professional" enough. I am looking for something cheaper than 100$. Anybody knows about one? Thanks.

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Its 200 USD, but about the best offering I've seen in that price point.

It can be extended to the Expert version, with simulation, CAM software etc etc
bwrussell5 years ago
I thought I remember Dassault saying something about a hobbyist version of solidworks but I could be confusing that with 123D or Alibre. I've heard Sketchup has come a long way, you might give it a shot.
rickharris5 years ago
Good /cheap are usually mutually exclusive!
I think one of the best free ones out there is Google Sketchup. If that is too limited then i'm afraid you will have to shell out more the $100 to get something you'll like.
canucksgirl5 years ago
I use Blender. It's free. :)