The first thing I'm going to ask is why you didn't calculate your shipping before the auction ended. Thats always a smart thing to do. Having said that, it definitely wouldn't cost him $40, $30 or even $20 to ship those games to you. As for what you can do, you can report the over-charge of shipping, but I'm not sure if you can do it until your item arrives. I could be wrong about that though. Other then that, try to reason with the seller one more time. If that doesn't work then I heard threats work surprisingly well, lol.