Tony Hsieh founded Zappos in 1999 and has since grown it to over $1 billion in annual sales. Zappos prioritizes excellent customer service, offering free shipping and returns along with a 365-day return policy. The company has over 1,000 brands and gets most of its business from repeat customers, who on average spend more than first-time customers. Hsieh attributes much of Zappos' success to its strong company culture and core values like delivering "WOW" customer service.