Mike Tysons Punch Out & Pac-Man(Tengen)

Yesterday I got a call from a friend and he told me he knew a girl that had some games. Last night I received a call from here. She named all the games she had and there was only two that I wanted. She said she wanted $20 for both games. I see Punch Out go for as much as $40 and Pac-Man for $25.
I'm also not sure why this Tengen game is gray ? I thought they were all black ? Can someone help me out here ? So, another good way to score cheap
Games, word of mouth !