PayPal supports all of those: https://developer.paypal.com/docs/api/ https://developer.paypal.com/docs/api/ You don't need billions in revenue to recoup the co

PayPal supports all of those: https://developer.paypal.com/docs/api/ https://developer.paypal.com/docs/api/ You don't need billions in revenue to recoup the cost of a few extra developer hours. Pay pals new REST API doesn't even look that hard to use, either (I've only used their older APIs)