There are a few key value props:
* Your PCI compliance burden is significantly reduced. * Card storage is a seamless process, and at the end of the day you own the card data. * You can easily switch gateways (or balance across multiple gateways). * Our API doesn't suck, which doesn't sound like much until you've had the misfortune to implement against a few gateway API's.
And there are other value props we'll be rolling out as time progresses - there's a lot of cool things we can do to improve the life of anyone collecting money online.