My strong suggestion would be to make it free and charge 99 cents for a premium upgrade of some sorts and also give people a way to pay more if they want to (consumables). Two weeks is perfectly reasonable for an experianced iOS dev to get a first version of a simple game done but if you have never done it before it might be difficult. Shoot me an email if you get stuck on something.
Good luck! I produced an iPhone game in 5 days, but I was using the Unity3D engine which really allows for abstraction from the nitty-gritty low-level iOS programming. I definitely recommend it for rapid development.
Thanks for the well wishes. At this point I'm married to Cocos2d. It offers just enough of what I need and it's free.
I've dabbled in Unity a little bit and was impressed at what it had to offer. But it seems like more than I'll ever need for what I can imagine doing in the short term.
Yep, you can do 2D. As a non-programmer, I've spent the last couple months learning scripting on Unity with the help of the Walker Brothers free online course.
Best of luck with your project, pumping out a simple game and publishing it is exactly what I'd like to do (when I finish off these other damn projects!).