I know this is probably common sense so please dont flame, but now with the new Arena Gear theres tons of people looking for new enchants, so enchanting mats have skyrocketed on the auctionhouse. Large Prismatic shards are selling for over 25g each on my server and such. Try to sell anything that is used for +spell dmg, like primal mana for mystic spellthread etc. I made almsot 300g in 15 min just selling some of my shards and essences