So they dug up that ET landfill.

[TrekMD]

The prices have varied from what I fan see.  Right now Centipede carts are seeling for $50.  Here is the link: http://www.ebay.com/usr/tbhs575

[Retro_Raiden]

I picked up a Defenders cartridge with manuals and no box for £55 (roughly $80) but the first game I got was Swordquest EarthWorld which was boxed and all that but i paid just under £200 for that one. The price is varying a lot. It is depending on loose cartridge or in the box.

[Papa]

Picking one up as a historical piece is one thing, but paying $100 for Centipede has both me and my wife slack-jawed!  I get it, though.. you get a neat little certificate.  I remember watching a video about the secret dump of all the left over E.T. stuff.  I guess they felt somewhat responsible for the crash, although I never thought any of those games were really that bad.  More like a challenge in programming. 

"Hey Tod?  Ya know that game everyone's throwing quarters into down the street that's full of chips and everything?"

"Yeah?"

"Can you do that in under 4K?"

 :21:

I really dig Activision and what they stood for back when Dave Crane co-founded it.  Programmers were being cut out of the credits, so to speak.  To bad they didn't dump a bunch of games in the dead of night!?!