The maximum price of an App Store app is $999.99, and yes, some cost that much. Mike Wehner, writing for TUAW, reveals that some of those expensive apps are an elaborate scam to rig App Store rankings. The scam works by bumping up an app’s price to $999.99, having a second party buy multiple copies — which moves the app near the head of the Top Grossing list — and then, with the increased attention, lowering the app’s price to a reasonable figure and raking in the sales. But other developers, like Sergiy Grachov, who sells his Fleas game for $999.99, do it simply because users keep buying. follow link
Mac OS X Services in Snow Leopard
Mac OS X Services let one application supply its powers to another; for example, a Grab service helps TextEdit paste a screenshot into a document. Most users either don't know that Services exist, because they're in an obscure hierarchical menu (ApplicationName > Services), or they mostly don't use them because there are so many of them.
Snow Leopard makes it easier for the uninitiated to utilize this feature; only services appropriate to the current context appear. And in addition to the hierarchical menu, services are discoverable as custom contextual menu items - Control-click in a TextEdit document to access the Grab service, for instance.
In addition, the revamped Keyboard preference pane lets you manage services for the first time ever. You can enable and disable them, and even change their keyboard shortcuts.
The Story Behind $999.99 iPhone Apps