Absolutly.
But then again, I do buy a lot of used games, especially older stuff. Recent buys...
Xevious 3D/G (PS1)
Shooter: Space Shot (PS1)
Metroid Prime 2: Echoes (GCN)
Disaster Report (PS2)*
*sold as used, even though the game was in pristine condition and the ID sticker on top was unbroken.