I personally never seen the lure behind purchasing "rare" games. Then again i like to play my games

- But each to their own
anyways sticking to topic...
I currently own, FF7 Jap orginal, FF7 Jap international, FF7 US orginal black disc's, FF7 PAL orginal black disc's.
I also still own all the Ps1 Final Fantasy games all orginal black disc's no plat versions:
Final Fantasy Anthology - PAL
Final Fantasy Origins - PAL
Ehrgeiz - PAL - spin off
Final Fantasy VIII
Final Fantasy IX
Final Fantasy X
Final Fantasy X-2
Final Fantasy XII
Final Fantasy Chronicles - US ver
I also own a crap load of Mega drive games along with 2 consoles and the CD addon thingy - Cant remember the real name off the top of my head. Also have one of the rarest Sonic games Sonic CD

SNES - with a load of games.
N64 - pikachu edition

again aload of games. Including the Zelda games which I believe have become quite rare.