essences in WoW.
You can see from the screenshot above, that this surpasses the prices on any essence, in fact, it is a constant on most servers that this is the main dog. Now there are a few options you can utilize to pick up enchanting mats. You can use the Auctioneer Enchant Mats search (however mine seems to be broken for quite some time now...), but once again, and you should know by now, I don't always cover the easiest way to get things. Knowledge is power, and I want (and prefer) you to know and get used to the names, the items, and what and where they come from. Some addon's take all the "smarts" out of things, and at times, is okay. But this way you will be checking and learning, which is a positive step in the AH PvP.
Greater Eternal Essence is disenchanted from many different items. I am going to focus on a few different ways (and you can go from there to find more, I just don't want this post to go 20 pages long). Mainly, I start with a search on Auctioneer for levels 48-55, as that seems to pull the best luck for me. The numbers might be a bit off (a level here and there), but this will get you started.
Greater Eternal Essence. Is this a possibility? Sure it is. Is the the "golden" opportunity? Not really. We want focus on a 75% chance to drop Greaters.
See where I am going with this? You feeling me? Good.
In order to get the most Essences (any style, any level), you will want to push for Weapons. Let's check the AH again under the "Weapon" tab..
Here you will see what we are looking for. We are using the Magus Long Staff of Stamina for an example. 8g buyout price, a possible 100g profit (if we get the proc on average, we obviously won't get a 1.5, but you get my point).
Once again, this is a starting point for you to go by purchasing and flipping or using them to profit. There might be more or less investment involved by crafting them yourself, so take a gander on your profs to see if crafting/de'ing is a good option or not. I hope this little "how-to" works for you as well as it has for me, and remember, this "class" will work many different ways, you just need to adjust your numbers here and there within your search.