I'm new to eBay and want to sell. How can I convince others of my honesty?

As a new eBay seller, start small, selling relatively inexpensive items, that can be shipped cheaply. Deliver them promptly, and pack them carefully. It's a whole lot easier to sell a USD5 to USD10 item when you have no feedback than it is to sell a USD 50 or USD100 item. Count on not making too much if anything on that first group of auctions. When you've built up a few positives, start selling more
expensive merchandise.

People want to see a pattern of transacting business in an honorable fashion. Starting small is the easiest way to establish a record of honorable behavior. Admittedly, some people do the same thing to sell nonexistent USD2000 laptops, but if you're selling books and toys, starting with the cheaper stuff first, and gradually moving into the higher priced but still similar merchandise, people are less likely to automatically assume you're a scammer.