for the most part video games (not arcade games) are like baseball cards. You collect them to collect and only the rare and highly graded are really worth anything and will appreciate in value. Super Mario 1 for NES will always be worth only a dollar or so loose just like a common baseball card. Pinball machines are like car collecting only their are really no common valueless cars. I collect video games and probably have about 1500. I would say that only about 5% of the library of any game system are collectable.

nevermind did a google search and you came right up!

You claim to have 122 pinball machines and 17,000 different console titles. Please post pictures as your collection would be one of the largest in the world. 17,000 really? I can't imagine how much space this takes up. My modest collection is all packed now as I have moved and it takes up a entire garage bay of boxes to the ceiling.

I still believe more than half of the NES catalog is $1 games. Sure on occasion someone may pay more than that but if you listed a few hundred at a time how many would sell? I was buying 50 a month for a dollar or so about 5 years ago but I stopped.