just the 'obvious' - look into stripe.com & moneybookers. Don't really know if either will help but stripe is aimed at developers & moneybookers is in Europe, s

just the 'obvious' - look into stripe.com & moneybookers. Don't really know if either will help but stripe is aimed at developers & moneybookers is in Europe, so they probably actually know how to manage exchange rates etc