Here's my guide on how you can earn around 60g in just a couple of minutes work, with the only limiting factor being the 5instance reset/hour cap. Theoretically, you could earn around 300g for about 15mins work!
Where?
Dire Maul West
Who?
Tendris Warpwood , First Boss
Tendris Warpwood - NPC - World of Warcraft
Requirements?
The ability to kill this boss, most level 70+ can do it with ease.
The ability to disenchant level 50ish loot.
So, What do I do?
Well, you go into the instance kill the boss, disenchant loot, run out, reset instance and repeat 5 times, then check DM arena if the rare spawn is there (high drop chance of Orb of Deception, which often sells on the AH for 500-1000g!).
The most common drop is Stoneflower Staff - Item - World of Warcraft , which disenchants into 3 Greater Eternal Essences most of the time. on my realm, Greater Eternal Essence sells for 20g each,so, 3x20g=60g froma few minutes work,times this by 5 resets per hour and you are potentially looking at 300g for minimul effort. Of course there is the chance of getting other loot, but I find that about 7 times out of 10, the staff drops which is our intended drop, and even if it didnt drop, we are looking at 20g worth of illusion dust from the shield, or a 10g shard from the leggings or belt.
Thanks for reading and happy gold hunting!