No, I checked. And I heard one guy say he saw one for 35,000g -- not that he thought it would sell. But it probably remains that they're going to be massively overpriced for a while.
I mean, the only people that are going to be getting these stones with any regularity are going to be the people really into pet battling, so I can't imagine too many are going to hit the Auction House any time soon.
It is indeed the location of the Darkmoon Rabbit.