Buying Arcade Classics?

spock123 writes "I grew up in the 80s and spent most of my time playing the old arcade classics (Pacman, Galaga, Asteroids, DigDug, etc). Now I feel a sudden urge to own one of these guys - but I can't figure out where and how to buy them. =Do the SlashDot readers know about companies selling 80's arcade machines? Where's the best place to buy? Recommendations, links and experiences are welcome."