Indeed, they should consider looking more at Europe, especially France and Germany. Their donation page seems to focus too much on US, Canada and seems to assume the rest of the world is happy with PayPal.
Other organization provide all information for SEPA bank transfers on their donation page (e.g. http://www.osmfoundation.org/wiki/Donate/SEPA), while the OpenBSD donation page just provides an email address that you should contact if you want to donate via a simple, plain bank transfer. That's kind of discouraging.