The 5$ a day app

My first app, Tic Tac Cthulu has been earning a steady 5$ per day in the app store after the initial publication.  Obviously, this is not a lot of money, but imagine if I publish another similarly successful app every month this year?  that would produce 60 dollars a day or 1800 a month, not a bad income for a part time job.  This does not include the initial publication which obviously creates more revenue.  So this is my goal for 2011, 12 apps, 5$ a day each.  Vacation in maui in December.

(Source: itunes.apple.com)