The Escalation patch has introduced several new scenarios with respective heroic modes that provide shiny new loot. It is still too early to predict which of these will demand the highest prices at the auction house or AH, since it can take weeks for players to work through the content and determine the value of the new drops compared to the existing items. Many expect the rarest and most prized drops to start commanding handsome prices starting June, so just keep your eyes peeled for popular WTB requests in general chat and high-selling items at the AH.
C C'Thun Alliance C'Thun Horde Chamber of Aspects Alliance Chamber of Aspects Horde Chants éternels Alliance Chants éternels Horde Cho'gall Alliance Cho'gall Horde Chromaggus Alliance Chromaggus Horde Colinas Pardas Alliance Colinas Pardas Horde Confrérie du Thorium Alliance Confrérie du Thorium Horde Conseil des Ombres Alliance Conseil des Ombres Horde Crushridge Alliance Crushridge Horde Culte de la Rive noire Alliance Culte de la Rive noire Horde
Like I said, engineering is the best when you aren't worried about making gold. The Loot-a-rang is super useful, nitro-boosts are nice when they don't fail, and the glider cape enchant is nice too... you get wormholes to Pandaria, Draenor (make sure you have a glider), Legion, and Argus (as well as a couple old world teleport locations)...Jeeves (and to a lesser extent Reeves) and MOLL-E are also super useful (bank and mail access anywhere, repairs, etc.).
DMF Cards the first ~72 hours of the expansion. Every deck was selling for 500k-750k after 24 hours, so I spent all the time I had and just shuffled bracers info expulsum. Constantly spammed trade that I was buying herbs at just about every price, and just went to town. Once the weekend hit (Friday), I sold my last few decks (made 44 total in those 3 days I think), and listed all my leftover cards on the AH at a decent cut.
All of my gold came from everyone buying stuff at a really marked up price for instance BS 2h mace if it proced epic i was making at least 125k per one and i was making batchs of 10 to 15 it was like 25k for blue and 125k+ for epics at the time. And i was buying the ore for like 16g to 40g a pop so huge profit. Im still trying to figure out what im gunna do now to rebuild it will be a slow process now.