To purchase a book, you need to select the quantity, but for the book "Blaze" it just drops in the buying sector. I think it would be better to make it for every book NOT to choose the quantity, since you won't need more than 1.
that can be done, put on work sheet, next update expected
Due to spellbooks made to be stackable, it's like that on shops. I was wrong nothing can be done to it