When you get into those price ranges, I can strongly suggest moving to a 3d package called Rhino.
website
This is a great all around 2d and 3d drafting, modeling, and a kinda lame but functional render engine, all for $1000. I used only the program for drafting both 2d and 3d drawings for complicated mechanical stuff for quite a few years. I'm also around if you have any questions about it. They offer a trail version limited to 25 saves.
It also is a great all around converter for 3d formats, and will let you export your drawings in standard autodesk formats.
downsides: doesn't have the "paper space" type environment that autodesk products have, so you have to do some of the typical 2d stuff in a little more "crude" workflow. Once you set up a few templates, and get your feet wet it won't slow you down though.
I modeled this in Rhino, but it was rendered in a different program
and the carving for this I modeled in rhino
and all of the organ and casings here
/end shameless plug here
