There is a number that should stop every CPG brand founder, product entrepreneur, and Costco vendor in their tracks. The Kirkland Signature brand generated approximately $90 billion in sales in 2025 — more than a $15 billion increase compared to Kirkland Signature sales in 2024. KatArt Visuals Blog Let that sink in for a moment. A single private label brand — operating under one name, sold exclusively through one retail chain — grew by fifteen billion dollars in a single year