Costco has reported net sales of $17.04 billion for the retail month of December, the five weeks ended January 5, 2020, an increase of 10.5% from $15.42 billion in sales last year.
Comparable sales increased 7.8%. Comparable sales excluding the impacts from changes in gasoline prices and foreign exchange were 8.4% in the U.S.; 6% in Canada; and 5.9% in international markets.
E-commerce sales rose 42.6% in December and were positively impacted by an estimated 20 percentage points, due to Thanksgiving/Black Friday/Cyber Monday occurring a week later this year versus last year. Total and comparable sales were positively impacted by approximately 1%, the company reported.