Costco and Sam's Club both offer sweet cream butter, but which warehouse brand delivers the smoothest and creamiest product?

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

These 18 Costco meals are high in protein (30-plus grams per serving), low in effort, and made with just a few real-food ...

Costco regulars say these overlooked items—from wipes to sardines—are some of the best bargains in the warehouse.

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

Cheaper look-alikes have been around for years, but social media has made them more popular. Dupes can move into shaky legal ...

Lululemon alleges that Costco has stolen the intellectual property of its Scuba hoodies and sweatshirts, Define jackets and ...

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

The Canadian athleisure brand has accused the warehouse club operator of copying at least six of its products, including its ...

Lululemon is suing Costco, alleging the wholesale retailer knowingly sold knockoff versions or dupes of its popular products.

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

No, Costco is not open on July 4th and will be closed on the 4th of July this year. So, to pick up a cheap rotisserie chicken ...