The game was Donkey Kong, and the year was 1982. And I was damn impressed with this piece of hardware.
Looking at that site I see this, the Multi-Williams for sale for $3100. Robotron, Joust, Defender, Stargate, and some junk. Neat. Asteroids for $1400, Frogger for $1500. Joust alone for $1800. Zaxxon for $1300. Nostalgic wastes of money, anyone? :) It's almost inspiring me to look into building a MAME cabinet.