So, I'll admit in the grand scheme of things, bik pages are likely low on the priority list.
However, I still believe that they are an issue. While the gp from getting one is a very nice boost to a Croesus hour, the ability to upkeep the pages is very difficult to sustain. Croesus is the only boss of Gwd2 that still suffers from this as all of the others have a viable way of farming pages. While I believe that the Bik book is likely the most OP of them, the lack of sustainability is troubling for those that would like to utilize the book without shelling out an arm and a leg for pages that cost nearly 9m each at the time of post (I.E. your average player, not the clue chasers)
My idea is to create a 5 minute untradeable page that is given per player that reaches the 420 total score. In a 4 man team at 9 kills per hour, this equals 1 page per hour of Croesus.
If you were to mess up during the kill and not get the required score of 420, you would lose the page drop (this would prevent players from farming kills in masses)