Payment method questions, hoping for solution.

Hello everyone.
The question i have is: What possible payment methods for monthly suscription do i have as options in my country? and where can i find them?
All credit card options are out of question because of my country's policy over credit card.
Country: Finland
All help is appriciated.

Try: 60-day Game Time Card

Im swedish myself and buy my game time cards from the link below. (also in finnish)

Webhallen

at the moment there's none in stock but if you place an order they will bring it home for you.

thanks for that, possibly other options available?