Many airports have adopted so-called "street pricing" policies, which means they require airport shops and restaurants to charge prices comparable with similar stores in town. But many haven't. Most retailers claim the operating costs are too high at airports to follow these guidlelines. Los Angeles International, for instance, doesn't even have a policy, while others, such as Atlanta's Hartsfield, allow retailers to charge a set premium over street prices.
Since airlines have cut back drastically on meals and snacks on flights in recent years, this leaves travelers with little choice then to pay higher prices.
The complete story can be found at http://www.usatoday.com/travel/flights/2009-08-06-cost-food-airports_N.htm
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