I have run into some decks in the "cheap" section at Barnes & Noble that I think are authentic decks, they're just a version that's produced without as much fancy packaging. I got Kawaii Tarot and also the Wild Goddess Oracle by these two creators that way. So maybe that happened with this one?
That makes sense to me. They have published their own stuff, and it looks like they retain copyright and just give distribution to whoever wants to do it. I'm at least glad it's not a knockoff. The artwork is nice, but without a book to bring a new perspective, and most especially because I CAN'T FRICKIN SHUFFLE IT, it will reside in the Collecting Dust section of my collection.
