This Freakonomics Radio episode investigates the surprising success of Trader Joe's grocery stores. The podcast features interviews with a business professor, a behavioral economist, a Trader Joe's superfan, and a former Trader Joe's employee, exploring the company's unconventional business model. Key aspects discussed include their limited product selection (around 3,000 SKUs compared to 35,000 in typical supermarkets), high employee-to-customer ratio, emphasis on customer interaction, and lack of traditional advertising. The podcast highlights how Trader Joe's leverages private label brands, clever marketing, and a curated selection to achieve high revenue per square foot, exceeding competitors like Kroger and Walmart. Listeners gain insights into the "paradox of choice" and how a limited selection can drive sales and customer satisfaction.