I'm planning a faction change with one of my characters, from Alliance to the Horde. As this is pretty costly, I'd like to make at least some profit on the way. So far I planned to:
* Buy lots of faction specific pets to slowly sell them
* Observe the auction economy. This could be especially profitable, since I'm also changing the realm. Any hints on certain items?
* What else?
*** 1. Pets
Elwynn Forest cats:
* Cat Carrier (Bombay)
* Cat Carrier (Cornish Rex)
* Cat Carrier (Orange Tabby)
* Cat Carrier (Silver Tabby)
There's also a white kitten sold by Lil' Timmy in Stormwind but it's limited stock (1).
Exodar moths:
* Blue Moth Egg
* Yellow Moth Egg
* White Moth Egg
Darnassus owls:
* Great Horned Owl
* Hawk Owl
Miscellaneous:
* Rabbit Crate (Snowshoe) (Yarlin Amberstill in Dun Morogh)
* http://www.wowhead.com/?item=44970 - Dun Morogh Cub -- this one looks like a great candidate. 400-500g on my old Alliance realm. 1000g+ on Horde.
Most of these pets should yield a profit of 20-30g each. Of course the demand is relatively limited and you will have to sell them slowly.
*** 2. Auctions:
I don't have a good plan for that yet. Obviously some basic research can be done with Auctioneer's Arbitrage searcher. Other than that, I'm just going to compare high price items manually, like Moonshroud, Frost Lotus or Primordial Saronite.
Do you have any other ideas?