How to sell an iPhone app for $9.99

"More and more, I'm thinking that it was a major mistake on Apple's part not to allow developers to easily offer demos and upgrades in the same app..."

When the author states things like this, it should be written "More and more, I'm thinking Apple should have delayed the release of the App store until they could easily offer demos and upgrades in the same app..." When put that way, does it still hold true? I doubt it.

Apple has singlehanded revolutionized the mobile phone app marketplace in spite of only being in the business for a year at the time they released the app store. Good for them for not trying to add every bell and whistle with their first release.

Sounds like a freemium model for iPhone apps