I can see why you thought it was, but "Open Price" in Japan means that the manufacturer has forgo setting the price themselves, unlike the previous policy that the price is dictated by Nintendo (in this case). The wholeseller's price... is simply not disclosed here, there's an NDA on that one (even with other companies such as Sony).
Playing cards is how they started, so why not keep making them?
I can see why you thought it was, but "Open Price" in Japan means that the manufacturer has forgo setting the price themselves, unlike the previous policy that the price is dictated by Nintendo (in this case). The wholeseller's price... is simply not disclosed here, there's an NDA on that one (even with other companies such as Sony).