I found this little gem earlier when I hit Exalted with the Shattered Sun. This has some good money making potential if you're a believer in "It takes money to make money".
To do this, need 3 things:
1) Exalted with the Shattered Sun.
2) Enchanting of 300
3) At least 20g
Simply put, purchase a Shattered Sun Pendant of Acumen. Disenchant it, you get a Void Crystal. Sell the Void Crystal on the AH. Right now on Bladefist the Void Crystals are going for a minimum of 40g.
Now, if you'll excuse me, I have to go power level my Enchanting...
Think well of me when you're on your Epic flyer....