Where do you go to sell or buy a gun? What is the easiest way to go about searching for guns? Mark Sims of Guns.com joins Gun Talk's Tom Gresham to discuss how easy it is to buy or sell online, and what to know about online firearm purchasing. Plus, how are the current times effecting online sales. Spoiler alert! Online purchases are through the roof. Mark also gives a little insight on how Guns.com puts a price on your firearms, and how easy they make it to find out what your gun is worth.