Costco has added platinum to its precious metals offering, but experts caution that the coins and bars are not considered a safe-haven investment.

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 bar is only sold online, and Costco says delivery is unavailable in Nevada, Louisiana and Puerto Rico. But the Costco site on Thursday also noted that the platinum bar was unavailable for delivery in several other locations throughout the U.S., including New York and Utah.