It was mentioned in the first 'patch' notes that the teller of secrets will now only sell one of each book.
But apparently this hasn't been correctly implemented yet... the whole thing seems a bit cheaty and obviously isn't intended by the devs.
Still, some like to push their PCs to superhuman limits
I would challenge the Dev's to build a perceptive rogue/mage with enough AP and HP to be effective in combat (hard difficulty). Without using books this is largely impossible unless you get massive RNG luck or savescum chests for gear.
I need 4 or 5 Attribute books for my character. Zero to one ability books. This doesn't feel "cheaty" at all to me. It's simply me trying to build the lead character I like to play.
