So, what manuals are you talkning about? They are virtually nonexistent!

Heh... are you speaking specifically about manuals with spellbooks not included? Well, for the record I have experienced visiting the mausoleum, and in my first 4 trips from logging in I found 4 books: 2 manuals (neither for myself of course), and 2 spellbooks (one for myself.... yeehaw). It sounds weird and superstitious, but you almost get a
feel for finding books after a while. I would also like to point out that although 95% of the time I do find books for other people, I have found several for my own char.
I wholeheartedly agree with Quino, and those who know who my char is (try not to blurt it out here) know that I have a dozen or more people who are basically at my service because I provide them with knowledge. If you find a book for another class, there's no telling what they will offer you for it.