Forgive me if this is a repost, but I personally discovered it and it's been working wonders if you need gold quick. All you do is buy pets from their vendors, and then stick them on the neutral auction house. For example, buy a hawk owl from darnassus for 40s, and sell it on the neutral AH for about 5g. They will sell almost every time. Also, if you are a higher level (66+) you can go into netherstorm and buy mana wyrmlings. The cost 40g I believe but you can resell them on the neutral AH for about 90g. Easy for quick gold for repairs or some such.