After buying it, theres a chance you will have to wait months to get the key.

You should choose 50€, its charity!

Ok, but it also comes with a hardcover book (maybe). Not that I want any of that.....

This is another level of worsening.

Humble does book bundles all the time, I don't really blame them for including a relevant game in a book bundle.

It should be in a lower tier though, considering Humble themselves already bundled it 5 times.

Interesting, considering the political controversy Paizo had about a month ago. Trying to garner more interest it seems, after the fallout.

To be fair, it lacks a bit of context.
It's a book bundle for tabletop RPGs, with one of the tiers including the digital adaptation of the franchise.
https://www.humblebundle.com/books/pathfinder-kingmaker-bundle-from-paizo-inc-books

Limited Supplies

Must be EXTREMELY limited for them to actually admit it for once