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

Costco is expanding its precious metals offerings, building on top of its rollout last year of gold bars, which often sold ...

A 1 oz. 24-karat gold bar from South African company Rand Refinery or PAMP Suisse cost about $1,950 and $1,980, respectively Kimberlee Speakman is a digital writer at PEOPLE. She has been working ...