I have a Magic Rooster Egg on Hellscream/Zangarmarsh (US), 5 Hatesparks, and a Landro's Lichling. I also have quite a sum of gold and I could buy some pets from AH. Going by my rules (1k gold=$1 USD) I'm willing to trade pets bought from AH for bnet balance cards. WARNING: Prices are subject to change, I will try to keep the prices updated at least once a day.
Magic Rooster Egg = 300k - 5-6 $20 cards
Hatespark the Tiny = 50k - 2 $20 cards
Landro's Lichling = 20k - 1 $20 card
Ethereal Soul Trader = 20k - 1 $20 card
Spectral Tiger Cub = 25k - 1 $20 card
Servant of Demidos = 30k - 1 $20 card
Dragon Kite = 30k - 1 $20 card
Gusting Grimiore = 20k - 1 $20 card
Eye of the Legion = 15k - 1 $20 card
For other pet prices PM me or add me at JaredS#1889 and we can discuss some other options. I also have 4 of the 30 day game time codes I'd be willing to trade for bnet balance.