And no, we're not talking about the famously affordable Champagne — we mean the Kirkland Signature Tequila. Costco outsources the production of its Kirkland wines and spirits, and the producers ...

Kirkland Signature, Costco's private label, has found the retail golden formula: premium products at prices that make competitors sweat. As consumers continually discover these products, they share ...

Costco shoppers reveal the worst Kirkland products they regret buying. Find out which items members say to skip and why.