I've got an early version. It didn't have ballscrews and weighed only about 140 lbs.
It is a Seig Micromill (x1) with a (much) larger table and adapted to cnc. The servo system looks to be very well made, but was a little too weak or sensitive; it is designed to stop if an axis encounters resistance. Kinda like a stepper loosing steps. I ended up replacing it with a Hobby CNC stepper kit.
The new frame to mount the table was thinwall tubing, so I filled it with concrete to add more mass, also went with plastic nuts for the acme screws.
The spindle was limited to 2000 RPM, so I replaced the motor and made a belt drive, now I get 9000. I see he has a spindle capable of much higher RPM now.
So anyhow after making a short story long, I've put a lot of time and effort to get this machine to where I expected it, so I think your money would be better spent on something else. A Seig X3 converted by yourself probably wouldn't cost much more and it would be a much better machine
HTH
Mark
Insanity "doing the same thing and expecting a different result"
Mark
www.mcoates.com