The Snow Sprites in the caves in Kun-Lai Summit is a awesome place to farm for gold in Mists of Pandaria. It is one of my favorite farming spots and you can make 5000g + an hour from farming here. The sprites have very low HP and at level 90 and most likely before that as well, you can just stack up a whole bunch of them and AOE.
Always remember when farming in MoP zones, bring a potion of luck. With the potion of luck you have a chance of getting extra treasure chests from mobs here that will give you even more gold. Also loot the chests found on the ground in this cave as they can hold around 100g in each.
After farming here for only 20 minutes, i had acquired :
200g in drops (1 ground chest with 100g)
Vendor Trash : 10g
Cloth, ore and misc. items : 250g
5 greens : 14000g
Total : 1860g in 20 minutes = Almost 6000g in an hour
If you really want to know how to make a lot of WoW gold (30k a day easily) Check out the link below :