It's now possible to pay with Ticket-Surf, which is available for Canada, France, Belgium, Switzerland, Brazil and a few smaller countries. You can buy special ticket-surf cards in kiosks, libraries etc. (see available locations:
http://www.ticket-surf.com/points_vente.php) and then use those to buy a Graal subscription or Gelats.
If you use Ticket-Surf you will also get 40 free cards (trading cards or tombola cards)
If you have any questions then feel free to ask them.