Costco Wholesale Corp. touted strong sales growth in stores and online through the busiest month of the year as brick-and-mortar retailers struggled to compete with e-commerce.

Costco reported more than $14.9 billion in sales for the five-week period that ended Dec. 31, up 14.3 percent from $13 billion in the prior-year period. December’s retail month had one extra day compared to 2016.

Same-store sales increased by 11.5 percent for the five-week period, including 10.5 percent in the U.S. and 33.3…

Seattle Biz Journal
Costco sales climb in stores and online in December after 'destroying' November