When pre-ordering an iPhone 3G from the AT&T store, the clerk will automatically charge you $15 dollars for shipping. Yes – they charge you to have the iPhone delivered to their own store from which you’ll have to come back and pick it up from anyway.
However, there’s something the clerk won’t tell you:
You have an option to choose between regular and expedited shipping.
Expedited = $15
Regular = $0
And the difference between expedited and regular? One day at most. That being said, make sure you specifically ask the clerk for regular shipping on your iPhone 3G in order to save an extra $15.
AT&T is just looking to make an extra buck. (surprise, surprise)