 This is a Bloomberg Money Minute. Well, if you have some gold coins in the back of a drawer, or one of those gold bars from Costco under your mattress, it's worth a lot more than it was a year ago, and it looks like a lot of people have been buying Costco's one-ounce Swiss Lady Fortuna VersaKen gold bars online lately. Gary Millerchamp, Executive VP and CFO at Costco. Total e-commerce sales growth in the quarter was led by gold and silver bullion, gift cards and appliances.