The 1-ounce platinum bars are available online now to members. This isn't the first time the store has sold precious metals.

The company sold more than $100 million in gold bars in a three-month period between September and November 2023. The 1-ounce, 24-karat gold bars were priced at about $2,000. The company describes ...

While gold bars and silver coins have previously been top of mind for shoppers, the retailer is now adding a third precious metal: platinum. Costco is selling the one-ounce platinum bars for $ ...