So I have the UAT from ST and I am farming the 1.3k Soldiery needed for my 100 weapon.

I have 750 Seals so I could buy my sands of time now too by buying 3 books.

The thing is I don't wanna waste the seals buying 3 books since I have 3 weeks before I will reach 1300 Soldiery and thus, 3 weeks of farming Hunts and chances of getting free Books as drops.

My question is do you think I'm safe holding onto these seals and not spending them, is there a chance SE will make the books cost more or unobtainable through hunts soon something like that?

Thank you