FYI: There may be a couple of copies left of Sketchup, used, from a guy who was selling AutoCAD lt at ebay. While he auctioned AutoCAD, he mentioned in the listing that he had Sketchup for sale. I am very concerned about buying any bootleg copies, so I e-mailed some questions and was satisfied enough to take a chance.
Why Sketchup? Based on favorable comments by Sketchup users here, thank you very much, and having sampled the free download. I want it for product design (versus engineering), which is all I need it for; I'm still using a solid CAD program from 1997 or so called Trispectives, so an upgrade was due.
The CD arrived on Friday and it looks legit, though I cannot be 100% sure (YMMV). It did come with all of the needed numbers for install, as best I can tell.
If you are interested, take a look at the guy's completed AutoCAD auction,