Yinka Ogunsunlade has had a profitable reselling business from the very beginning. The first item he listed and sold was a perfume set that his mom received for Christmas and wasn't planning on using. "I saw what it sold for in the retail store, and I said, 'Let me see if I can put it up on eBay,'" the DC-based lawyer told Business Insider. "It was a no-cost item, so anything that I made from it would be strictly profit." That was back in 2005. Ogunsunlade had just started law school and was