He seemed very nice and reputable so I ended up going first and gave him H1Z1 and a bunch of bundle games. He supposedly gifted me No Man's Sky in return on GOG, but, over five days later, I still don't have the game. I tried messaging him about it countless times but he never responded. I really didn't want to give him a -rep but I have waited very long and he isn't willing to respond or even contact customer support. I'll change my review if he responds to me, contacts customer support, and gets me my game.
+rep Friendly and reasonable trader, everything went smooth and I'd gladly trade again!