This incredibly rare game goes for crazy money even without its box, with the number of known copies barely into double figures. It's so obscure that only the box clearly verifies the game's developer and official title.
The seller's story is remarkable too. Working in the video game department of a drug store in the 80s, he was given Air Raid to sell by a visiting rep. After trying it out at home, the seller decided it wasn't good enough for the store and told the rep to take it back. The rep (forehead-slapping-moment imminent) told him to keep it anyway. Nearly three decades later, the rest is $33,433.30 worth of history.