The first Guardian Cubs are now showing up in auction houses around Azeroth.
Here are the prices I saw this evening on the servers to which I have easy access.
Eldre’Thalas (PvE Alliance) – 3 Cubs Listed
Eldre’Thalas (PvE Horde) – 1 Cub Listed
Hyjal (PvE Alliance) – 4 Cubs Listed
Lightninghoof (PvP Horde) – No Cubs Listed
Thrall (PvE Alliance) – No Cubs Listed
20-25,000 seems to the middle ground for the few auctions I have seen, with the low bid price being 14,249 gold, while the high end stands at 140,000 gold.
Of course, I have no idea if there were lower priced ones listed that sold already. That is just my snapshot as of 00:30 UTC.
A quick price check at a likely gold selling site showed me $10, the price of a guardian cub, was currently buying 7,000 units of illicit WoW gold. That might lead one the believe that, perhaps, an asking price of 140,000 gold for a $10 Guardian Cub might not be a sustainable price. Misplaced logic might lead you to conclude that legal gold ought to command a premium over illicit gold, so the price might be more reasonable at, say, 5,000 gold per cub. We shall see.
What sort of prices are you seeing on other servers?