Fanatical Costco customers have been sent scrambling in recent weeks after a surprising product became a best seller - gold bars. The brand is known for its out-of-the box range of bargain items, from titanic tubs of Nutella to caviar and saunas. Now, in a surprising turn, a range of gold bars available online has seen customers clambering to get their hands on one of the nuggets - with two options weighing just 1 oz and costing in the region of $1,950. The gold rush came as Costco pleased investors with promising quarterly returns this week. On the earnings call Tuesday CFO Richard Galanti confessed: 'I’ve gotten a couple of calls that people have seen online that we’ve been selling one-ounce gold bars.' 'Yes, but when we load them on the site, they’re typically gone within a few hours, and we limit two per member,' he added. While the bars appear to be only online in America, TikTok creators have revealed that Costco locations in Korea have the items on shelves - with images showing some going for up to $79,000.