Special video game edition!
$10,000 and climbing Atari 2000 prototype, unreleased followup to the Atari 2600. (this item via waxy)
$1600 Game & Watch Super Mario Brothers. (read an explanation of the Game & Watch at wikipedia)
$500 boxed copy of the pornographic NES game Bubble Bath Babes (related topic: Custer's Revenge for the Atari 2600 where you attempt to rape a topless Indian woman tied to a cactus.)