In April, Wells Fargo analysts estimated that Costco generated between $100 and $200 million a month after debuting its one-ounce, 24-karat gold bars.

The price of the bars, which first went up for sale a year ago in October 2023, varies depending on market value. (The price of gold was trading at $2,641.87 per ounce as of 9 a.m. EST Thursday.)

Related: 'Typically Gone Within a Few Hours': This $1,900 Costco Product Is Flying Off Shelves

Now, Costco is adding platinum bars to........

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