Hypixel added XP discounts for enchanting and adding books in Febuary and the Enchant/Hex GUIs have been slightly broken ever since, since they don't have the code to parse discounts. I could not fix the xp costs in the list being incorrect, since the information about discounts is not available to us before the user clicks on an enchant (theoretically possible with API but that's a problem for another day).

I made it so every time an Enchantment class is instantiated, there is now a check to see if a discount exists and if so, the cost information is overridden with the discount info. This makes it so the cost information displayed on the enchant specific page is accurate, and fixes the problem of a greyed out "Apply" button when the player is able to apply the enchant.