Psychic Chirurgery requires someone else to be there and to willingly give it to you,
Actually like all StP Erudite things, it's all about who you can capture. For example, Third Eye(power thieve) lets an Erudite directly steal Psychic Chirurgery from a Telepath using a DC 16 Will Save, he can then Manifest Fission and use the burrowed Psychic Chirurgery to permanently learn it.
Or even just say "Hey DM
its core to just pay someone. Here's the money." Yes it's expensive, but it's explicitly cheese-free. It most it will require you learning chirugery yourself, which is a great idea for a dedicated manifester anyway to reduce how much you spend on NPC castings/manifestings.
@"all the powers": I crunched the math on that once and it was sooooooo not worth it. There are just a lot of medicore/bad spells and powers out there.
Archivist and Erudite wanna take a closer look at the Apprentice Spellcaster feat.
It has this unbelievable line : " ... wizards can copy from their mentor's spellbook at no charge ... "
Obviously a wizard likes this too, but this is MAJOR for Archivist, and an even bigger boon for Erudite.
I suppose the Apprentice feat could be abused, but honestly wizards don't pay to have access to other spells anyway.
In fixed 3e, this still isn't a problem due to the maximum spells known limitations.
Planar Familiar feat http://www.realmshelps.net/charbuild/feat/Planar_Familiar
... can get a Mirror Mephit at level 7.
I was about to say you found a fixed 3e loophole in the summons-can't-use-their-SLAs to still get the SLAs of a creature by making it your familiar. But then I realized that this only gets you powerful, unbanned SLAs rather than broken ones. Almost!
And to actually contribute: a little Eberron adventure, SotLW page 23 has an effect worth only 800gp that gives an extra +1enh bonus if mounted (.125+2k+1k+1k)
Page 20 also has a nifty "see through your undead" spell that is useful if you go by the RAI usual debacle on command vs control spells (plants, undead, etc).