I tried buying goods wholesale and selling at a market stall :) Failed dismally and lost money :( Need to have the right personality. The guys who were natural extroverts and spoke with a booming voice got most of the sales. It's the same in this blog post. He's a marketing guy and very tactful. He's good with people. Most other people who tried his "business" idea probably wouldn't get a single sale. So for the average person, it's even worse than what you suggest.