A developer making $30,000 a month on windows 8 apps.

Here is the story of a developer making $30,000 a month on windows 8 apps. http://kevinashley.com/making-30000-a-month-on-windows-8-apps/ The app he developed is "card games chest". I don't know whether he made any other apps for windows 8. It is a good read and hopefully other developers realize the potential of windows 8 store and make the apps for windows 8 and windows phone.