"Software: The most obvious point is that Apple hasn't compensated for mass purchasing yet."
"The Volume Purchase Program makes it easy for educational institutions to purchase iOS apps in volume and distribute those apps to users. The Volume Purchase Program also allows app developers to offer special pricing for purchases of 20 apps or more."
"The Volume Purchase Program makes it easy for educational institutions to purchase iOS apps in volume and distribute those apps to users. The Volume Purchase Program also allows app developers to offer special pricing for purchases of 20 apps or more."
http://www.apple.com/itunes/education/