How do you become a success on eBay?

Firstly, I think the important thing is to do your research. Research on the type of products which you want to sell. See how much people are selling their stuffs, how big is the market and whether the thing you are selling is in demand. Its important to research on where to get your good cheap too. When you started selling, be honest, trustworthy and answer to the questions by the buyers promptly. This way, people would be able to trust you as a seller and buy things from you.