“I can certainly see somebody saying, ‘How come Delicious Library is $40 and I can buy Keynote for $15?’” says [Wil] Shipley [of Delicious Monster]. “That’s because Apple is projecting to sell 20 million units of Keynote and I’m projecting to sell a fraction of that. The day that I sell 20 million units, I’ll change my price to $15 as well. It’s hard to compare to that kind of volume.”How the Mac App store could blow up the software market - Fortune Tech