In the PS3 thread there's a link to a method you can use to circumvent the restriction on local credit cards by using a virtual credit card. It works.
How legit is this? I ask because I very dearly want that new Bionic Commando: Re-Armed from the PSN Store.
The virtual credit card generated by ENTROPAY does not have a billing address. It worked for me with the US account with my address as California. It only creates a virtual card with funds in US or GBP so I dont know if the canadian store only accepts canadian currency.