If I was to develop an app and wanted to put the app up for sale on the App Store, what is the cost?
How would I be paid for the app?
The cost of the app may vary depending on different factors like what devices the app can be used in and its proficiency. You may consult the Apple customer service personnel to find out how much they would purchase your app. Learn more from http://cplus.about.com/od/iphonecodingtutorials/a/app_store_development.htm.
You should ask apple!