A friend of mine released an Android app for free on the Android Market (we're in Canada), and he has made virtually nothing on advertising. The model availabl

A friend of mine released an Android app for free on the Android Market (we're in Canada), and he has made virtually nothing on advertising. The model available to him was limited to clicks and not impressions, so while he has had tens of thousands of impressions and a decently large number of active users, he receives a very tiny number of clicks and therefore makes a profit that is less than negligible. One of the apps I released on the other hand (on another store), has cost a variety of prices between 1.99 and 2.99, and I've made a few hundred dollars in sales. Think about it this way: he makes around $5 CDN a week in advertising for his free application which took him weeks to develop, whereas my app nets me around $1.90 USD per sale and it took me about one full day's work. I've kind of rambled on at this point, but basically what I'm saying is this: I need to sell less than three copies a week to top his profit, and I'm running on a store that has significantly less traffic than the Android Market and selling my app, not giving it away.