Good news if you are leveling an alt and you have Draenor Pathfinder so that you can fly in WoD, the next 10 levels will only take a few hours. Personally, I didn’t have this until recently and I went back and got the achievement and I’m glad I did. Now I can level all my future alts fast by just flying and picking up treasures for a couple of hours.
Wow, an absolutely fantastic, if not monstrously OP one that I'm sure will be nerfed soon. The on-use effect is definitely very alchemist-y and a lot of effort went into the extra cosmetic (Cthulhu fhtagn!), useful and profitable effects of it. The bonus procs on a limited timeframe, I think are a fantastic addition, especially for profitibility, save em all then go nuts! I do wish it was for the full hour rather than 2x 10 mins but ah well. The cauldrons are OP as hell though, with very short (~5 mins) respawns at multiple fixed locations throughout Zandalar/Kul Tiras, and with each one giving a random potion, flask or even Cauldron(!) each, that's huge profitability. And with how essential flasks and potions are during raiding, these bonus ones as you are questing are incredibly useful! I would strongly recommend making this asap and farming cauldrons while you can, as I strongly suspect these will be put on a longer cooldown with how much they are giving right now.
To use it as a bag-space creator, simply send excess items to the bank alt whenever you're near a mailbox for a low price of only 30 a slot. Even if you accidentally send the wrong item to the bank alt, it can be returned-to-sender for free. It's very quick, due to the fact that sending mail between characters on the same account is always instant.
When assigning a selling price, do not aim for too low a price that would give you too little profit, but certainly do not assign too high a price. Too much greed is never a good thing, and the AH is filled with items that do not sell due to excessive inflation. A very common tactic in the AH is to sell for lower than what another player is offering, and many players make a lot of money that way. Similarly, losing sales thanks to being undercut is never fun. Aim for as low a price you can that will still make you a good profit. If you can keep producing the same item over and over, sell cheaply yet make a good amount of the item, you will reliably make a lot of money by volume. Moving inventory is the best kind of inventory.