That's what I'm interested in, the real-time rarity.. in my short time dealing with Intellivision (other than playing it at a friend's house way back when), I've now seen two Spikers for sale (though I never saw the one posted, it was bought immediately), and a few Stadium Mud Buggies (one of which I won).. and those are the top of the Rarity Guide's list.. but I have not seen and full CIB Congo Bongo (only in completed auctions), Jetsons, Learning Fun II, just to name a few..