Oh, and if you have 30K and are Super Tough, there's the Shriver in Fiendish Codex 2, pg. 52. That's a Magical Location, mind. Oh, and you'll be making a LOT of Fort and Will saves, and taking a TON of damage, so be prepared...
Effects:
1 - You cannot be Shaken.
2 - You can't be Frightened or Nauseated.
3 - You can't be Panicked or Sickened. +2 on Fort Saves.
4 - You can't be Confused or Fatigued. Regeneration 1 (ex) / Good or Chaotic.
5 - You can't be Exhausted. +2 on Will Saves.
6 - Regeneration 2. Act better while Disabled.
7 - Regeneration 3, Barkskin 1/day (CL 5, Free Acton).
8 - Regeneration 5.
9 - Divert [Healing] spells to yourself, if the caster is distracted and you can make an opposed Concentration check (Immediate Action).
That's pretty amazing for 30K! However, you have to do Corrupt and/or Obeisant acts (pg. 30) equal to the number you managed to get per 99 days or it's lost. Not so hard, even without turning Evil. Don't stay too long, though, because any extra time will give no more benefit, but will require more acts!
You'll need to survive 9 x 2d20 Damage, 9 DC 15-23 Will and Fort saves and a LOT of pain over 9 rounds to get all the benefits. Oh, and you'll need to run away, after.