Apple Applications like PhoneSaber which are targeted to most of the audiences are free. Currently there are 6 apps that cost over $50 and due to this the average price on an app is $6.70, but the overall cost on all apps is $4.96.
Expensive apps have also started to make their way in the App Store. Two MyAccountsToGo apps are running for $449.99, and another iChart EMR is charging $139.99. Of course, these are targeted at professionals who will heavily rely on them.
Many feel that the apps available for the device and its capabilities as a software platform may actually be more important than the device itself, so the growth is good for iPhone owners.