In what may be a tradeoff of margins for higher sales, Costco (COST) is moving into the Chicago...

|About: Costco Wholesale Corporation (COST)|By:, SA News Editor

In what may be a tradeoff of margins for higher sales, Costco (COST) is moving into the Chicago gasoline market - the highest-priced one in the U.S. mainland. The move should slow profitability, but may drive new memberships as Costco prices gas $0.06-0.12 below market. RBOB gasoline currently -0.9%.