• Apple and the companies that sell software for the iPhone and iPod touch at the App Store have lost over $450 million to piracy since the store opened in July 2008
• There have been over 3 billion applications downloaded since the App program began.
• Estimates are that between 13% and 21% of the downloads are from paid applications.
• The average price of an application purchased at the App Store is $3.
• Estimated revenue from the App Store is between $60 million and $110 million per quarter.
• Cydia (a renegade app store that can be found on almost any jailbroken iPhone or iPod touch), as of August 2009, received over 4 million unique visitors. This represents about 10% of iPhones and iTouches that existed at that time.
• The jailbreaking process has only become easier since August, and if that figure is still about 10% of all Apple devices that can access the App Store, that would mean that the total number of jailbroken devices today is approximately 7.5 million assuming that total worldwide sales of the iPhone and iPod touch are now 75 million.
• Pinch Media, a company that specializes in mobile software analytics, has found that only 40% of jailbroken devices use pirated software.
• There have been over 3 billion downloads since the inception of the App Store.

From: http://247wallst.com/2010/01/13/apple-app-store-has-lost-450-million-to-piracy/