I did the contact at the manufacturer's link, asked them if there is any North American distributor. If I get an answer, I'll post it here.
(I'm in Canada, so hoping one of the Canadian electronics distributors sells it. I have accounts with several, though, and no luck so far. It used to be common, but I guess the custom circuit board services have killed off a lot of the motivation for the folks that used to sensitize their own boards.)