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

A striking tribute to American patriotism, the We The People Silver Card is a unique and artistic bullion piece or silver bar ...

In addition to gold bars and coins, Costco offers a limited selection of precious metals online, including silver and ...

It's true. Costco began selling one-ounce gold bars last year and now members of the warehouse club can purchase silver coins as well. Deciding to add gold and silver to their inventory was a ...