Costco

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In this photo from Aug. 9, 2011, Gary Hartwig of Gretna, Neb., fuels his car at a Costco gas station in Omaha, Neb. (Associated Press)

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FILE - In this file photo made Dec. 8, 2009, a carton of Newport cigarettes are seen on display at Costco in Mountain View, Calif. A Food and Drug Administration advisory panel said Friday, March 18, 2011, the removal of menthol cigarettes from the U.S. market would benefit public health. (AP Photo/Paul Sakuma, file)

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ASSOCIATED PRESS FILE In this Sept. 8, 2010 photograph, a Costco customer prepares to pump gasoline at a Costco in Redwood City, Calif.

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** FILE ** Customers arrive at a Costco store in Mountain View, Calif., on Sept. 8, 2010. (AP Photo/Paul Sakuma)

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In this Sept. 8, 2010, photo, a shopper buys paper towels at Costco in Mountain View, Calif. Consumer spending rose by a moderate amount in August while incomes increased by the largest amount in eight months, a gain that was propelled by the resumption of extended unemployment benefits. (AP Photo/Paul Sakuma)

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In this Sept. 8, 2010, photo, a Costco customer leaves the check out stand with two carts at Costco in Mountain View, Calif. Americans' view of the economy turned grimmer in September amid escalating job worries, falling to the lowest point since February. (AP Photo/Paul Sakuma)

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In this Dec. 8, 2009, photo, shoppers peruse the frozen foods section at Costco in Mountain View, Calif. Inflation at the wholesale level surged in November, reflecting price jumps in energy and other products. (AP Photo/Paul Sakuma)