People are still asking $3000-4000 for B list 10 year old games, so no I don't think prices are dropping.
That's great if they get those prices, but when you can buy NIB stern games for $4000-6000 I don't see the value in an old pin like these.
As proof, just look at some of the For sale listings from today-- $4000 for Monopoly, $3500 for DataEast Star Wars, $3000 for an Indy500...