Now, I’d like to point something out. Yes, there have been many Pokémon cards over the years that have only released in Japan, and it would be really nice if they had all been released in the U.S. In fact, this sort of thing has happened since the very beginning, and not just with collaborative projects. But even if they never came to the U.S., it is still possible to buy them. In fact, they are made even more special by their own exclusiveness. I admit I would honestly prefer to make a card more common as opposed to making it a collectors items, but they are still out there. And, like with Japanese card sleeves and deck boxes and play mats, you may have to pay more, but you can still get them. It all depends on how much they are worth to you.
