Pre-GT ban event cards should hold more value, considering gtmeteor() had several event exclusive 6*s, bringing the total down below 9 instead of modern event 6*s still having 10. Many people were also permanently banned due to implicating themselves with him which even further reduces the number of event cards from then.
It would be interesting to see who still has what cards, I personally noticed that I haven't seen most of the Black Dragon Castle event winners online lately. Perhaps it would be useful to compile a list for pre-ban owners to determine the number of remaining cards still left in game.
for Georgios (BDC rankings):
1. Valhades - Traded to gt (deleted)
2. LayZJester - ?
3. jdelmundo - ?
4. wadeghaleon - ?
5. PersonaZou - ?
6. pxc5058 - Still owns
7. yan45608730 - ?
8. kaishinhui - ?
9. svnata - Still owns
10. instrincttk - Traded to Valhades
As mentioned, most of the winners have either gone inactive or been banned -- I have not seen most of these guys lately. Current people who are holding him that I know of:
-Sultas? (I've heard from him that he was borrowing Georgios, not sure from whom)