[Aleph]

Well, I listed two of them above - you only have to hit with a black bow for auto feeblemind, and you can always gamble on the slave collar pickup, neither of which are expensive. He also said he's got heaps of money so he can try pretty much anything, so my impression was that it was less about cost effectiveness and more about getting the job done. It just depends on what indeps he's been able to pick up.