I offered him $10 and he took it. Not a great deal by any means (and I might have overpaid) but every game works and I was going to eventually get Tetris and Dr. Mario anyway and I also needed a replacement Mario Bros. 3.
Here are the names of the games if the pictures don't work on your screen well. (Sorry for the poor quality pics. Having to use my cell phone for pictures right now.
NES: Super Mario Bros./Duck Hunt (2 Copies), Super Mario Bros. 2, Super Mario Bros. 3, Dr. Mario, Tetris.
GB/GBC: Paperboy, Asteroids, F-1 Race, X-Men Mutant Academy, NFL Blitz.
(The games X-Men and NFL Blitz really suck but Asteroids and F-1 Race make up for it.

