I've got a 1994 model Stargate by Gottlieb, great fun although we don't play it much now and have been considering selling it. I also had wide playfield Laserball by Williams which I restored about 4 years ago and sold 2 years ago for $3000

Addams Family is not a cheap pinny and one the most popular is Twilight Zone, both sell for around the $6000 mark.

Old table machines like Space Invaders (yep, had one) are difficult to restore as parts can be hard to get, maintaining them can also be costly... you are better off buying a new machine with old school game play's...

My pinny....