I tracked the sales of that deck for the first week or two. They sold a few bricks the first week of launch, after Mismag's video went up. I don't think there were that many to begin with so selling out over the course of half a year isn't saying much.
After seeing how poorly Mismag's video bumped sales for the deck, I stopped trying to contact him about sponsorship entirely. His demographic doesn't have money, and most of them watch his videos for the insane amounts of stuff he gives away and the magic tricks he teaches. The majority aren't even card collectors and don't even know such a hobby exists.