Pretty sure it's not the real deal as everything in Japan is going to be more expensive than international counterparts. As a matter of fact, I used to work for an organization in Japan that took great pride in their ability to copy Brunswick tables, Simonis, Gina's, SW, Cogs, ect. You name it, these guys could provide it. Please understand that this organization didn't produce these products, they only sold them.
As a general rule, in Japan, you will never find anything pool related for a better price than elsewhere. It's cheaper to buy anything from a place like Seyberts with international shipping than it is to buy in Japan.
Dave