PLEASE let me use a villager that trades unbreaking 3 books. I will pay 2k for permanent use, And renew the trade whenever you want.
I believe that it would be worth more to use. I have a villager that trades 14 emeralds for an unbreakingIII book but I would not allow someone to use it for 2k. I sell the book for 1k each so I would let you use it 2 times