Here is an awesome comparison chart sheet on cost of ownership between the 3 competitive smartphones in the market today. Apple’s iPhone 3GS versus Palm Pre versus Motorola Droid. Droid is the latest entrant in the smartphone marketplace dominated by the Palm Pre with Sprint and Apple’s iPhone 3GS with AT&T. If you didn’t know which phone to select and which network to associate with, the chart would help you figure out which one of the smartphones and service provider suits you needs in the best way.

Source:
http://www.billshrink.com/blog/total-cost-of-ownership-motorola-droid-versus-iphone-3gs-versus-palm-pre/