Costco Wholesale Corporation net sales were $4.39 billion for the month ended April 30, 2006, an increase of 11% from $3.94 billion in the same four-week period of the prior fiscal year. Comparable store sales increased 7% during the same period.

For the first thirty-five weeks of its fiscal year ended April 30, 2006, the Company reported net sales of $38.30 billion, an increase of 11 percent from $34.43 billion during the similar thirty-five-week period of the prior fiscal year.
Comparable sales for the 4-week and 35-week periods ended April 30, 2006, were as follows:

4 Weeks   35 Weeks
US                           7%       8%
International                7%       9%
Total Company                7%       8%

This year's four-week period included 27 days of sales compared to 28 days last year, reflecting the timing of Easter. This calendar shift impacted sales negatively by approximately two percent.