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Huh? It's all on AT&T's website. Clear as day: http://www.att.com/shop/wireless/data-plans.html
The information is certainly laid out by the carrier and then it's some basic arithmetic to figure out the numbers that would apply to one's individual case. Sure, it requires a little bit of time and effort--although certainly nothing even close to drastic--but then what meaningful purchase doesn't?
 
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