Costco is the largest membership warehouse club in the United States. As of 2015, it was the second largest retailer after Walmart, and since 2016, Costco was the world’s largest retailer of organic foods, rotisserie chicken, and wine. Costco has more than 700 locations in countries around the world, including the United States, Canada, Mexico, the United Kingdom, Japan, South Korea, and Australia. All year, Costco offers a wide variety of incredible deals on products in every department of the store. However, you should shop the Costco Black Friday sale if you want to find the biggest savings. You can find hot gifts for friends and family at affordable prices. In fact, the deals are so good that you often have enough money left over to buy something for yourself.