The Swiss-made bars are only available to Costco members, whose annual fees range from $65 to $130. Made of 999.5 pure platinum, the bars are non-refundable and limited to one transaction per membership at a maximum of five units per order. They are only available online and can’t be delivered to customers in Louisiana, Nevada or Puerto Rico.

Costco already sells gold and silver bars, and now it sells platinum bars too. Will that make much difference to company revenue?

The company sold more than $100 million in gold bars in a three-month period between September and November 2023. It's betting that platinum will do just as well.