Costco's well-known Kirkland Signature brand pops up everywhere in the store, from snacks to shirts to paper towels and more.
Kirkland products are generally less expensive than name brand products. For example, Kirkland sells a snack very similar to Kind bars for about 60% of the price, but both items are still on shelves.
According to The Wall Street Journal, about 25% of Costco's $118.7 billion in annual sales comes from Kirkland Signature products.