Costco Wholesale Corporation ( COST ), which is slated to report its second-quarter fiscal 2013 results on Mar 12, 2013, came up with robust sales for the month of February. Excluding the effects of gasoline prices and foreign currency fluctuations, Costco's comparable-store sales for February rose 6% with U.S. and international comparable-sales elevating 6% and 7%, respectively. After an increase of 4% in January, Costco's comparable-store sales for February climbed 6%, reflecting comparable sales growth of 6% at its U.S. locations and 4% at international outlets.