If you know how to make apps, you can be
making money with Android via the Mobile
Advertising Model. It is notthat easy to
make money by selling Android apps.
Instead you may optfor in-app advertising
on android apps. Running ads inside your
app generates revenue. The user doesn't
have to pay and you get money. It's a win
It seems counter to the usual norms, but by
giving away your app for free you will earn
a lot more than if you sell it.