Costco Wholesale Corporation net sales were $5.21 billion for the month of October, an increase of 13% from $4.63 billion in the same four-week period last year. Comps for the quarter increased 9% for the total company.

For the first nine weeks of its reporting period ended November 4, 2007, the Company reported net sales of $11.26 billion, an increase of 11 percent from $10.16 billion during the similar nine-week period of the prior year.

Comparable sales for the four-week and nine-week periods ended November 4, 2007, were as follows:

                                      4 Weeks    9 Weeks
                                     ---------  ---------
                    US                   7%         5%
                    International       17%        14%

Total Company 9% 7%
                                     =========  =========

The U.S. comparable sales figure includes the effect of recent gasoline price inflation, with the average sales price per gallon of gasoline up 25% year-over-year for the month of October. Excluding gasoline price inflation, U.S. comparable sales in October would have been 5%. In addition, significantly stronger foreign exchange rates, particularly in Canada and the U.K., positively impacted October's international comparable sales results. Excluding this effect, international comparable sales increased 4% in October.