Paid Upgrades
Paid upgrades in Apple’s App Stores has been a topic of some debate since the App Stores launched. Wil Shipley stoked the fires back in March, arguing that the Mac App Store needs paid upgrades:
Right now developers selling through the Mac App Store face a lose/lose choice: either provide all major upgrades to existing customers for free (thus losing a quarter of our revenue), or create a “new†product for each major version (creating customer confusion) and charge existing customers full price again (creating customer anger).