Oft-mentioned services like Chargify, CheddarGetter and Spreedly have limited international support. Often it's difficult to determine the extent of the support, and I have been searching through support forums to find out what I need.
CheddarGetter, for example, supports "all currencies" (their claim) and a number of international gateways and merchant accounts, but does not offer any languages other than English. So they didn't think that one through.
Recurly has several languages, but does not offer any template system for their hosted payment pages, so no custom translation is possible. (None of the other services I have mentioned support templating, either.)
My experience, from dealing with 5-6 different SaaS billing vendors, is that it's as though globalization hasn't happened yet. All the current SaaS billing vendors are US companies who have no clue about the rest of the world.
There are international-friendly non-SaaS vendors, but they have web pages built from stock photos of soulless, snappily-dressed consultants (eg., http://www.wirecard.com/) and the only way to sign up is to call them and talk to a sales person.
[Full disclosure: I'm a Willet co-founder.]
- The FAQ says that "Willet is a super fast and simple way to buy digital goods and services". Surely you are targeting developers, ie. the seller, so you should tell us that Willet is a super blah blah way to sell digital goods and services?
- Willet seems designed for very small transactions and has no support for subscriptions.
- Your site does not tell me how I, as a seller, gets the money. Surely that's at least half of the point of services such as Braintree -- ie., the merchant account.
That - or just use PayPal WPP.