Costco Wholesale Corporation saw September sales amount to $5.56 billion, representing an increase of 8% from $5.14 billion reported for the same month last year. Comparable sales increased 4% in the month, with 3% of the gain coming from the domestic market and 12% coming from international sources.

Costco currently operates 488 warehouses, including 359 in the United States and Puerto Rico, 68 in Canada, 18 in the United Kingdom, five in Korea, four in Taiwan, five in Japan and 29 in Mexico. The Company also operates Costco Online, an electronic commerce web site, at www.costco.com and at www.costco.ca in Canada. The company plans to open an additional 15 to 16 new warehouses prior to the end of calendar year 2006.