Yes, these "big box" stores as we call them purchase from a number of suppliers and Tier 1 and Tier 2s. Have you contacted these stores to inquire as to who their internal "buyers" are? They usually have a specific policy and guidelines that they follow. A number of this big stores also have diversity requirements where they must purchase a certain amount of goods and services from minority, women and veteran-owned businesses. Do you meet any of these criteria? If so, and if interested, you may want to learn how to leverage these business certifications to obtain contracts at: www.innoventum.com/bizcert.html
Keep us posted.