If you mean "REAL" thermal clipons, i.e. prism collimated, the only change is for the worse. LWTS-LR are now "unobtainium" as well. At least new ones are. However, I think
@deersniper has a used one for sale in the PX. The LWTS-LR, is not a UTC/x/xii ... but if you can't get a UTC/x/xii, the LWTS-LR is the next best thing we can get (that's prism collimated AND repairable).
If I didn't have two UTC/x/xii, I'd definitely get an LWTS-LR ! These guys can enable hitting 12 inch (heated) steel out to 900yds at night ... if you can do it in the day.
So, we do see used UTC/x/xii and used LWTS-LR changing hands, in fact there's been rather an uptick in that lately as people play "musical real thermal clipons".
Now, there's always the PLA option, if you're so inclined
The other option is to keep saving and keep your eyes and ears open ... as there are a "glimmers" of some new items heading this way from somewhere on the outer edge of the galaxy !