The Canadian Forces ended up with several 150's, back in the early 1980's or thereabouts. I had the pleasure of using one of them, in my last posting at Cold Lake Alberta. As far as I know, that one is still being used. If a 150 ever lists in Cold Lake, be aware that the servo-motor that is supposed to operate the fast traverse of the carriage, is dead and missing. Kinda doubt you will find one just laying around...
Coupla years back, one was listed on CADC, out in Ontario, out of a National Research Council lab, IIRC, I was about $200 short of the winning bid...

It was still all sealed bids at that time, rather than Auction as it has become. So close, but...so far away! LOL! By memory, that one went for a bit under $6K, so paying a company to rig it and truck it, was still going to make it a pretty good buy, at the price I bid, I figured.
Last one other than the CADC one I saw listed, was by Don, the site owner at Practicalmachinist.com. It was nice, but priced accordingly, just under $100K USD! Procyon Machine on ebay, IIRC.
One dealer that posts over there (PM), is in Holland, and may have a better chance of having one in stock, as well as being quite aware of the relative shipping costs. Username is Peter, or Peter from Holland, IIRC. edit to add:
https://veltmanmachines.com/#lathes-link shows a 135 in stock, at 17,500 Euro.
Given the relative lack of Schaublins around, might be an idea to look into some of their peers, stuff like the Weiler comes to mind.