The dog days of summer didn’t stymie U.S. consumer demand for Costco Wholesale’s bulk bargains. The wholesale club’s net sales at rose by 7.1% year over year to $19.8 billion in August ...

Warehouse club operator Costco is best known for letting you load up on groceries and other items at discounted prices, but the chain has also earned a reputation for selling cheap gas.

eight days before the planned opening of Costco's membership store on Oct. 18. With 32 fueling stations, it is now the largest gas station in Napa County. Current prices are $4.29 and $4.69 per ...