I don't want to quote pricing, since I'm not sure if the builders want each quote to be public, but you can get a Pheer or Esteem with motor and VFD for less than $1,600. I thought about the possibility of buying a KMG and adding my own motor and control, but in the end, I don't know enough about it to do it correctly and cost effectively. I don't even want to wire my own controller, lol.
I certainly understand that. I didn't know jack about electricity start of this year and after being infected with knife sickness I know a great deal more than I thought I would ever understand. I recommend getting some basics down for both safety and savings.
Maybe I'll do an introductory post. "This is what knife making has done to me" thread
On the VFD, I've been reading about them because in my quest to have a Nick Wheeler-esque style shop I have been buying large tools like crazy and some are wired for 480 and are 3 phase, some don't work right, etc. So while I'm no expert, I know enough to be dangerous and will attempt to hook up the VFD to my motor to test it (bought it as new old stock) because the seller gave me 30 days to return it. If you want I can let you know how difficult it was.
Good luck with whatever you purchase and be sure to post some pictures!
-Augus7us