I was actually looking into this to replace an Apple Lisa screen at one point. You will find that there is a market for LCD CRT replacements with older expensive CNC equipment. Replacements are equally expensive. This Google search for "lcd crt replacement" shows you some examples (which you probably already found). If I recall, these were in the $600-$1200 range.

It was too expensive to do so I ended up finding a replacement CRT for $15 and replaced it. Maybe with a 12" color you can rig something up. 12' B/W screen was a whole other matter.