You can make quite a lot on the Android market. I've always been opposed to people selling off indie games for $20 or so, but people are making millions out of simple, but well-presented indie games selling for $1.
I've been looking for a little project to do for Android, but don't really have the time for it yet.
Disclaimer: Any sarcasm in my posts will not be mentioned as that would ruin the purpose. It is assumed that the reader is intelligent enough to tell the difference between what is sarcasm and what is not.