Pink Panther wasn't really rare, just absolutely under-the-radar-no-one-gave-a-shit release late in the PSone's life.

As for the collector's editions - the only thing collector about them was that they were in a 3 pack of games.

That's it.

http://www.game-rave.com/psx/playsta..._ce/index.html

Bah, i need to edit that page for the ps2 comment at the bottom.