The nation's large retail store has a size of over 3,000 square meters, selling products such as food, household goods and home appliances to consumers in a self-service manner at a lower price than the average store. Food products, including fresh and processed foods, account for an overwhelming 50 percent of the sales, followed by household goods and appliances. While the narrow concept of large marts includes E-Mart, Homeplus, and LotteMart, the broader concept includes warehouse discount such as Costco, Traders, and Big Market.