Club store giant Costco Wholesale Corp. reported big sales gains in the first quarter of fiscal 2018.

Net sales at Issaquah, Washington-based Costco totaled $31.1 billion in the quarter, up 13.3 percent from the first quarter of fiscal 2017. Comparable store sales also were up, by 10.5 percent. And ecommerce sales rose 43.5 percent.

Net income for the quarter was $640 million, or $1.45 per diluted share, up from $545 million and $1.24 per share last year.

Costco operates 746 warehouse stores, 518 of them in the United States.