Bump, also curious about this. CAD user here but USD ratios seem more attractive when converted
I now have verified that its impossible for me to give/receive balance in both USD/EUR.
AFAIK its only possible in b.net store currency and both people need to share currency.
I think I can still receive games and other products without limits.
AFAIK the only way to change b.net currency is to move/use VPN for extended period and then request change with proof of residence (Blizz specifically mentions utility bill)