

Which means you will be making a massive profit off of them, however you will still need to wait for them to sell. The only way I have ever purchased Greater Eternal Essences from the Auction House is if they get down into the "blue" area on Auctioneer. Since sometimes it is difficult to get Greater Eternal Essences to sell I don't recommend buying them out from the Auction House even if they get down to 30g (Or something similar to a 20g profit each).

On my server I know I can get at least 45 - 50g for each Greater Eternal Essence so I try to never put them on the Auction House for under that price. They are most common from green level 60 weapons that you get from LBRS/UBRS but can also come quite commonly from armor as well.

Greater Eternal Essences are one of the biggest level 60 Disenchanting material money makers.
