The Queen of Spades on WoW LJ asks the million dollar question about Upper Deck's loot cards: so how many do I have to buy to really get one?
Good question. nantena points us to this thread over on Upper Deck's site that has the odds set from the Heroes of Azeroth loot cards at 1:96 packs for the tabard, 1:288 packs for the Hippogryph pet, and 1:566 packs for the turtle. That means you have to buy 566 packs, which is about 24 boxes (there were 24 packs per box in Heroes of Azeroth) at about $60 each, just to mathematically come close the odds you need. That's already $1,440, and even then, considering all the cards are randomly placed, you're not guaranteed a card.