There’s a special kind of thrill in tossing a Kirkland Signature product into your oversized Costco cart, especially when you know it’s quietly outshining the pricier name-brand version it’s modeled after. While the warehouse giant is known for its bulk buys and budget-friendly finds, the real magic lies in its Kirkland Signature line — aka the “dupes” that give the big-name labels a run for their money.