Costco’s website shows 1-ounce gold bars were available for purchase for $2,689.99 before tax, but are now sold out, leading to members rushing to stores.

The most direct way to invest in nickel is to buy the actual nickel bullion in the form of coins or bars.

Gold’s breathtaking surge this year to repeated record highs hasn’t stopped bullion from flying off shelves at Costco Wholesale Corp. stores across the US.