Costco Wholesale takes care of its more than 64 million members. The success of that approach, justifying one of the higher valuations in retail, was apparent in the warehouse club’s latest earnings report.
Results for the May quarter, released Thursday, showed a company operating at rock-bottom margins, allowing the lowest prices possible for customers. And management ruled out an imminent increase in its annual membership fee, while dismissing speculation about a price rise for its popular soda and hot-dog combination, which…
