Originally Posted by
goatdan
I voted Ms. Pac-Man, only because I own one though.
I would suggest picking a couple things you are interested in -- perhaps the four above -- setting yourself a price range and then going to an auction and seeing how close you get. A Ms. Pac-Man in good condition will set you back at least $1000 usually, but a Donkey Kong or Frogger you can usually snag for under $800. Decide what you're willing to spend and then see if anything matches. If not, re-examine what you want.
Don't overpay unless you're positive you know what you need. That always sucks.