@OrangeSamuraiD
Many shops around Akihabara would sell a full deck.
For example,
•Torecard(
@_torecard
) sells full decks on their EC,
•Toreca Raftel(
@card_raftel
) would have up-to-date decks at their store.
•Card Shop Ponpoko(@CardshopPonpoko) also probably a place to go see.