This is awesome, I know loads of people who will use this, including me if I ever have time! A couple of questions though: How does payment/subscription work?

This is awesome, I know loads of people who will use this, including me if I ever have time! A couple of questions though: How does payment/subscription work? Is there a limit to the number of apps you can publish under the monthly plan, or is there a cost per app and then a monthly fee for the analytics and push? Is there a nice user interface for push? Where can I see a demo of it all in operation (the management of an app that's out there)? :)