In those cases the customer clearly doesn't know what they are doing, they are paying for data they are nowhere near using. and with share everything you get unlimited talk, text and 2gb of data for $100. Not sure how they are getting to $150
The majority of customers don't know what they're doing and don't want to go over, so they pay way too much. Most of the people I talk to are on legacy plans and with VZ and Att and you can't just change your plan without contract extension. Legacy Nation 900 with unlimited text and 3gigs for an iphone is $110 with $20 or more in taxes... That's close enough to $150 i suppose.