What began as a teenager selling unwanted Lego pieces online has grown into a thriving business that generated more than $400,000 in annual sales, according to reports about an 18-year-old entrepreneur in South London. Jamie Bell, who operates an eBay-based collectibles business, said his venture has expanded far beyond a simple hobby and now serves both collectors and resellers seeking rare and bulk Lego items, timesnowworld.com reported.