Honestly, as much as I'd love to in a perfect world, I don't think that will happen. Even though the application only took me two weeks to complete, there was still at least 50 hours of development time lovingly hand crafting and coding the UI switches, interface design and polishing, business logic and conceptual design that has gone into the app. Not to mention support and potential feature additions for the future, dealing with Apple, and so on.
So far I've calculated my hourly rate to be less than $1 USD.
This is not a complaint (seriously) as I've thoroughly enjoyed making it, and it's certainly not my only source of income. Just to know some people are using it makes me happy. The sad state is that the App world is a race to the bottom, and I think $5 is quite cheap if you like what you see