On my forever ongoing journey to 80, I this time found myself at the 'Altar of Sseratus' (no typo) - where the Argent Crusade is in constant battle with Champion of Sseratus - NPC - World of Warcraft
They aren't plentifull but the beauty is that you can hit them at any point (ie; near death by npc) and the loot will be yours!
Humanoid; so big chance of dropping cloth to auction aswell.
No set loottable, so have the same chance of dropping as any other general mob in northrend.
Respawn very quickly being questmobs for a quest that only requires 10 kills - so people won't stay there for long.
I simply go about killing them off with Icy Touch and have earned a nice bit of pocket money
And that is pocket money; no bulk of gold to buy every epic from the AH with.
(In the third obviously some braindead naab put up a belt way overpriced thus my addon is far off - but it could probably go for about 5-10G~ or you can DE it for more ^^)