Costco has struck gold by selling its one-ounce bullion bars — so much so that the big-box retailer is reportedly raking in as much as $200 million a month as the price of the precious metal skyrockets. Revenue “may now be running” at$100 million to $200 million monthly, Wells Fargo said, according to CNBC — a rapid acceleration from the$100 million sold in one-ounce gold bars in its fiscal first quarter that ended in late 2023. “Our work suggests there has been significant interest given COST’s aggressiv ...