Quit crying, Microsoft. The AppStore is as close to a free market as you'll find with sellers choosing their prices and buyers deciding to buy or not. The only thing missing are some apps to compete with Apple's built in apps like their music player. Competing apps are against the rules, even though I could think of a half dozen improvements to the build in music player.
You said — I just found eRoentgen Radiology DX which “provides physicians with a fast, efficient way to determine which radiology test is best for a given patient.” Price: $49.99, which is a lot more than 99¢.
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Exactly..., the apps are there and will sell, if they are good and meet a demand that is there.
Heck! There was one developer (not too long ago) who sold his 99¢ app at the iPhone Online Store and made $250,000 in about three months. Yee-haw! LOL....
That's exactly why MS is crying. MS doesn't want a free market. Their game is to undercut the competition on price until they run them out of business, then jack the prices up.