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.

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.

The 1-ounce platinum bar sells for $1,090. Sales of gold bars on Costco's website have previously sold out in minutes.