expaand

Paul Stamatiou has a very nice summary of Amazon’s Flexible Payment Services. This is a platform for developers for creating customized payment systems. These systems could be as complex as a PayPal clone, or for specific requirements such as recurring billing, charging commissions, expediting payments between two customers, etc. Micropayments are supported. And Amazon has a  tiered-arrangement for charging for the service, depending on  payment method, with what seem to be quite reasonable fees.