Costco Wholesale reported net sales of $5.02 billion for the month of
July, the four weeks ended August 5, 2007, an increase of 11% from
$4.53 billion in the same four-week period last year. Comparable sales
rose 7%.

Comps rose 6% in the U.S. and 10% internationally.

For the first forty-nine weeks of its reporting period ended August 5,
the leading wholesale club operator reported net sales of $59.33
billion, an increase of 9 percent from $54.41 billion during the
similar 49-week period of the prior year. The fiscal 2007 year-to-date
net sales results include the $452 million adjustment to the sales
returns reserve previously reported in the fiscal 2007 second and third
quarter results. Excluding the adjustment, net sales for the 49-week
year-to-date period were $59.78 billion, representing a 10 percent
increase over the prior year.

Comparable sales in the 49 weeks rose 6%.

Costco currently operates 513 warehouses, including 378 in the United
States and Puerto Rico, 71 in Canada, 19 in the United Kingdom, five in
Korea, four in Taiwan, six in Japan and 30 in Mexico.