Looks like its 110V but needs
plumbing (or flojet). Get a look inside if you can. If you can try it, it heats up/the pump is running I'd go for it but make sure you also get the portafilters.
Here is the info on the
Mac2000 Does it come with a e-61 grouphead?
No.
Is someone on this board familiar with the brand?
They are currently the machine sponsors for the WBC.
Are the parts for repair easily available?
Likely a
yesAre the parts costly? Are they reliable?
The Mac2000 is a commercial machine and (probably ) fairly bombproof. Since its a semi-auto there is no flowmeter and related electronics that are expensive to replace. My caveat would be that it might be a challenge to get information, but that's part of the fun?
Good luck!
Edit: Check
this 4.8 liter boiler - should be sufficient for home use

Might need 20A service - if it's 15A that will take some time to heat up. Size W350 H470 D500.