how does Bnet balance trading work?

[Moneypenny]

Sorry for sounding stupid, but i see alot of people doing pet trades and asking for Bnet Balance
for the pets.. can someone explain to me how this works.. is it simply buying a Ah token and giving them that
or buying Bnet from blizzard?? thanks

[Peanutty]

Bnet balance comes in $20 gift cards that you get from Best Buy, gaming stores, etc. To trade them you just scratch off the back to get the code and give/accept the code from the other party.

[Moneypenny]

ah i see thanks Peanutty