So my son wanted an iPhone, but there was no way he could afford a $40/month service plan. Solution? Purchase a used 1G iPhone (thanks Hal) and activate it without a data plan. While the new 3G iPhones require a 2 year data plan, repurposed 1G iPhones do not. Big thanks to Esai at AT&T for making all the appropriate account settings to disable the data service on Aidan's iPhone. He wanted to be able to text message, but the iPhone data/SMS plan is a bundle. The only way to get just SMS is to purchase the Family SMS plan, which is $30/month.
I don't think he has really missed it. He usually has access to wi-fi, so he can watch his YouTube videos and download apps from the iTunes store.
Had to reset the iPhone this evening; it would not power on. Mr. Google filled me in on the details and all is well.