Costco sells house-brand motor oil under the Kirkland Signature label it uses for many other products. Does this oil pass the ...

Kirkland Signature spirits are a good buy, often made by reputable brands and sold at a good price. We pick out the tequila ...

If you're a Costco shopper -- and you also love ice cream bars -- we're comparing Kirkland Signature and Haagen-Dazs ice ...

Costco launched a private label named Kirkland Signature that put a unique spin on the concept of shopping generic. The ...

Costco’s iconic $5 Kirkland Rotisserie Chicken is well worth the price of membership, customers say. “If you buy a rotisserie ...

Shoppers maintain that Kirkland toilet paper isn’t what it used to be. “Toilet paper quality has gone downhill. Now it’s ...

Vancouver-based Lululemon asserts that Costco sells apparel that mimics the look and feel of its products.

Lululemon has filed a lawsuit accusing Costco of selling cheap “dupes” of its popular yoga pants and hoodies. The company ...

The athleisure brand is accusing Costco of selling knockoffs of several of its signature designs and offering them at a lower ...