If you're up to paying, VariCAD works on Linux and is pretty good although it has a pretty unique paradigm that takes some getting used to.For historical reasons, I just don't trust Autodesk. They also don't support Linux, so it's not an option for me. It's not that I am a FreeCAD fan boy, it certainly could use polishing, but it's one of the few functional solutions available for Linux users. Do you get what you paid for? In my case I get far more than what I paid. I get a functional CAD for no cost. Seems ok to me.
GsT