I've been browsing the Surugaya (japanese secondhand store mostly for all kinds of fandom goods) website, which fyi you SHOULD NOT do if you're like me and easily drawn in by fun merch, augh my wallet, but anyway, I've been looking around the Blue Lock stuff that was only sold at the special exhibition. That's pretty much the only official merch you'll find of characters that are manga-only so far.
And the sheer amount that anything Kaiser-related costs more than any single other character merch?? I could have been convinced to buy a little pin badge with official art of that bastard's face, but not for over 40 euros, wtf! I could get one of Ness for around six euros though.
They also have little collectible (I think blind box) figures of the characters and they are adorable. Most of them will run you around 11-15 euros secondhand, some more popular characters like Isagi or Nagi go up to around 30 euros. And Kaiser? Can be yours for 12,282 yen. Which is. Over 75 euros!!
And. Honestly I'm not even that surprised, but it still sure is something to see. It's actually kind of hilarious.
Side note, last summer I went to a con with a friend and we saw three Blue Lock cosplayers. All of them were cosplaying Kaiser.
I wonder what that all will evolve into once the guy actually makes his anime appearance.