Advanced adversarial combat: cost increased?!
I was on a path of finalizing my second lesson plan by gathering resources first. I could have done it by now, but prioritized something else instead.
Each of 5 feared adversaries upgrades used to require 100 DADA books each, which meant 500 DADA books overall. You could guess my surprise seeing that now every subsequent one is 50 books more expensive and overall cost skyrocketed to 1000 DADA books.
Let me for now assume that this was a bug and I would like to ask you to fix it please to make it back 500 books.