Kirkland Signature isn’t just a private label—it’s one of the most powerful brands in retail. For shoppers, Kirkland represents trusted quality and exceptional value. For Costco buyers, Kirkland is a strategic lever that shapes category economics, pricing pressure, and brand negotiations. For brands entering Costco, understanding the “Kirkland Effect” is essential. It influences how buyers evaluate your value proposition, how pricing is framed, and how your brand fits into Co