Google Android Devices

I am very very very interested in designing my own phone with Google's new SDK, Android. One question that keeps me from downloading the kit now. To write programs for phones using Android, do we need to be a professional software developer, or can any boy of 13 years are the mobile of his dreams? And besides, what about prices?

I would not do it yourself will be easy. However, the phone will be in a few months, so we can wait. That's what I do.