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Peeved at Prices? Don't Blame the Dealer

Every time Sohaila Rezazadeh rings up a sale at her Exxon station on Chain Bridge Road in Oakton, her cash register sends the information to Exxon Mobil's central computers. If she raises the price of gasoline a couple of pennies, chances are that Exxon will raise the wholesale price she pays by the...
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By Steven Mufson

 
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