Here here! I do the same for my line of fitness apps. $3.99 at the moment. The only way for consumers to begin to understand that the software they use everyday costs real money to build and maintain is for us to charge for it. I'll be experimenting with higher prices later this year. Cheers!
It sounds like your discussing your demand curve - https://en.wikipedia.org/wiki/Demand_curve
Posts without URLs get penalized, so you should submit the article and then add your text as a first comment in the thread.
Edit: actually it looks like the story was submitted at https://news.ycombinator.com/item?id=11222681. Posting your text as a comment there would be a good idea.