Yeah so in the same vein of Magic:The Gathering
We now have a CCG based on WoW.
Every store here sold out of it in under 3 hours, and I still have 2 unopened starter kits.
considering some of these "loot cards" are going for hundreds of dollars on ebay already (with bids) I think the collectible value of this game is more in the reseller market than in the card shops.
As far as the game itself, kinda early for me to say, but it appears that deck designs will be rather limited until they introduce more than literally, 16 different heroes (aka, 16 decks)
Honestly, I would suspect the game to have been a flop if not for the MMO being intertwined in the points program and loot card aspects of it all.
heres some links on it.
http://entertainment.upperdeck.com/wow/en/
singles valued online so far?
http://www.toywiz.com/wowcards.html