When I was trying to increase my stable of pets, I focused on making gold through pets. It was a market that I was interested in as buyer, which allowed me to use gathered knowledge to my advantage as seller.
I owned 6 Crawling Claws at some point.
There is also large amounts of duping that goes on, so there is that.
That is true!
I believe that most dupers do their trades through direct trades rather than AH. It has a major influence on the market though. They might try to change their selling strategies, but I assume that the AH takes too long (most likely) for temporary characters.