Well I wondered because in Tokyo I visited a game shop which had a huge number of different Tarot decks. At the time I didn't know it was a game, and now that I do I'm too far away to go there.

Most of the decks online are the arty farty sort too though. At least on the sites I usually find when I do the search. The local "specialty" game shop has nothing of the sort either, although they did have 13 spot cards for playing 500, which is elite in its own way.