Camneerg.com was a website from some engineering student who broke his Classic Mac's screen and used a green phosphur screen as a replacement. But the wiring was not compatible with the tube, so everything was backwards. And this was from the 1990s! Camneerg is Green Mac spelt backwards.

So it is not as rare as one thinks, and it is definitely not some collector's item. It's an attempt to fix something that they broke.