The currency for those in charge of an ecosystem is to get you using their system as quickly as possible, or associate the new device with your existing personal graph as quickly as possible.
And Assistant Professor Ryan Buell is studying the extent to which the price youchargefor service affects how much it costs you to provide that service.
And for when you need to charge your gadgets or lamps while camping, the PowerPot is a new camping pot that uses heat to charge your devices while you cook a meal.
There isthe cost of your service or product (your time, materials or costs), the fee or prices you would charge on the open market, and then there isthe value you would put on it when trading for something you might never have had the luxury nor the budget for.
And, frankly, that's what's driving this shift, is there are people who have discovered they can offer for free what the phone companies can only chargeyou a lot of money for.