Costco Wholesale Corporation is a membership-only warehouse club that warehouse club provides a wide selection of merchandise. As of July 2012 [update], it is the second [update] largest retailer in the United States, the seventh largest retailer in the world and the largest membership warehouse club chain in the United States. [ Founded by James (Jim) Sinegal and Jeffrey H. Brotman, Costco opened its first warehouse in Seattle, Washington, on September 15, 1983.James (Jim) SinegalJeffrey H. BrotmanSeattle, Washington

Over the years, Costco has gradually expanded its range of products andservices. Initially it preferred to sell only boxed products that could be dispensed by simply tearing the stretch wrap off a pallet. It now sells many other products that are more difficult to handle, such as fresh produce,produce meat, dairy, seafood, fresh baked goods, flowers, clothing, books, computerbaked goods software, vacuums, home appliances, home electronics, solar panels, jewelry,vacuumshome applianceshome electronicssolar panelsjewelry tires, art, fine wine, hot tubs, furniture and caskets. Many warehouses havehot tubscaskets tire garages, pharmacies, hearing aid centers, optometrists,photoprocessors, and gas stations.garagespharmacieshearing aid optometristsphotoprocessorsgas stations

Costco introduced Kirkland Signature as its house brand in The idea was to identify categories in which a private label product could provide brand name quality at discounted prices. To counteract the consumer confidence problem common in store branding, Kirkland Signature sometimes relies on co-branding. According to Costco, while consumers may be wary of same- store-branding, they are less likely to be wary of brands that they are familiar with and trust.co-branding