Check it. Here’s. Plus, insider tips on how to make money on eBay from eBay senior exec Jim Griffith. Fri Sethi. We also interviewed a senior executive at eBay to get insider tips on how to make money selling stuff on eBay. Want more money? Susan and I are both fans of Big Wins. That means aggressively cutting rfo, optimizing our spending, and earning. How much can you really make on the site anyway? Most importantly: Is it worth it … or am I just going to get screwed by selling all of my stuff way below market value. Photos are going to be the very first thing people look at when they click on your product listing.