They didnt , and they'll keep that close to chest.
It's trade wide through whomever WB allows or gets to carry it. I would suspect the qty is healthy but not too crazy given its still catalog. If it doesnt come back in stock locally in UK I'd suggest importing.
That's what I love about collecting. Everything is subjective. Beauty is in the eye of the beholder. I can see these guys put a lot of effort into the design and execution of this package. It's different from all that's gone before, and that's actually a pretty big deal. But for me, there is nothing to like. And that's the great thing. There doesn't have to be. Others will love it enough for it to be a success. So good on Titans of Cult for entering the game.