Go for it! Just remember the 4 "P"'s of marketing: -Product: What are you selling? Would people buy it? -Price: How much are you selling it for? Is it competitive? -Place: Where are you going to sell it? Ebay? Swap meet? Door to door? -Promotion: How are you going to get the word out? Craigslist? Flyers? Ad in the paper? It's first year business school stuff but a lot of people don't think of it. Good luck!