Hi there!
I went down the same route….looking for secondhand…you might well find one, the only thing I found here was a Gerber 404 with 7hp Perske spindle and vacuum table for about £18,000 its still for sale after a year or so.
You might get lucky by calling the dealers and see if somebody is p/exxing a standard machine for one with atc.
I looked into quite a few options Multicamm A & M series, Gerber, but finally settled on an AXYZ I ordered a 4008 5’x8′ which got dropped in transport and it got replaced by a larger 4010 5’x 10′ which is much better given the size of many substrates.
The monthly payments are not much more than what I was looking at on a secondhand, and you could spec the machine how you wanted from the start.
Just a thought! 🙂