Welcome to the forum, Paul! When you get a minute complete your profile with first name so it clears the N/a in the side panel.
What all comes with the CNC besides the DC? Computer, software, any spare parts, vacuum pumps, etc.? Why are they getting rid of the machine - does it have too much wear to cut accurately, are there problems with the electricals, parts out of production, etc.?
A local friend owns a large cabinet shop and their 10-year old CNC was used almost daily and they wore it out. He said it wouldn't hold tolerance to 1/8" and they were getting sloppy fits on their cabinets to the point they were having to clean up the cuts on the table saw. They replaced it two years ago with an amazing machine around $100k - very fast and accurate.
I only bring these things up because someone bought their old machine, that was still working, and the new owner was made aware of its shortcomings. Just making sure you know the history and true performance of the one you're looking at.
David