Question for you Google Wallet users that I can't seem to find an answer to:
If your Google Wallet has $10 in it, and you try to use it for a $30 purchase, which happens?
a) The purchase is declined, since you are $20 short
b) $20 is charged to your GW funding source, the payment goes through for $30, and you have a $0 GW balance
c) Something else
Thanks, and </offtopic>