The price of 1 ounce of gold varies based on the spot price, which is the current market value of gold. The premium on 1 oz of gold is the additional cost over the spot price, often due to minting and distribution costs. Costco's one-ounce gold bars sell out fast due to their low premiums and high purity, making them attractive to investors. The current 1oz 24k gold price can be found by checking the spot price and adding any applicable premiums.