When you make a mobile app, you usually have to find out the hard way what will sell. You can't fiddle with pricing for just a few people, for instance. All that could change very shortly in the Android world, however. Sources for The Information claim that Google is introducing a feature that lets Android developers try different versions of the same Google Play Store page. You could not only see different previews of the app, but different pricing -- the creator could charge you $2 for that hot new game, but ask $3 from others to see if they'll accept higher pricing.