Well... If your into classic arcade games, Williams auctions have a few gems in there. I'd buy the Robotron 2084 if I did not have one in good condition already. Sinister is another cool gem.
Yeah... Seems the "fireworks" will happen at the last days of these scheduled auctions. Maybe they know lots of people will come for the newer titles and want to make room when they sell them.
Makes sense to push out the older titles in the back first.