yes, i believe it's on the first page he actually got the card description and stuff all correct word for word so i think he/she is telling the truth. yes, gamestop or eb games. ALOT of stores have it.
ok, i just tested the codes and the cards are still in the game. they work just fine and is translated and everything. i really do think they are unlockable without cheats.
yes it should work for your version of codebreaker.
i think that IS the reason some of the dialouge is a bit awkward.
make sure you get the 80 GB one and not the 40 GB one!!!!!