This is a great script for the marketer webmaster who sells buy now digital products. As payment gateways it offers the overwhelming popularity of Paypal along with the flexibility of 2Checkout. Products are made available instantly and securely to buyers through the magic of instant payment notification. The easy to use admin interface offers some great features, like automated link access and licence expiration, one click update notifications and much more. An integrated affiliate system is included, which lets affiliates make money selling your products. This is not a digital download service. It is a standalone PHP script system you own. So there are no future fees. So if you prefer self sufficiency, this is the digital download system for you.