Do you really need that iPhone?

As I've noted before, I totally get gadget lust. And the iPhone and similar smartphones with always-on Internet access are neat gadgets. But $100 a month for the voice and data plan? $1200 a year? Changing your mind about getting an iPhone is like giving yourself an $1800 annual raise.

I'd like access to the net anywhere I went, too. But not at those prices.