Arcade Equipment Values

Hey, I found this forum while looking for information on arcade equipment prices.  My family is going to move soon and I have some equipment that I've had for nearly 20 years and never done anything with.  I have an asteroids game monitor without any screen burn whatsoever.  As I was told by the guy I bought it from nearly 20 years ago, it was from an arcade that had been in a basement and flooded.  The pcb's were all destroyed, but he salvaged the monitors from all the games.  I guess it happened shortly after they got the asteroids game as there isn't a hint of screen burn on it.  I paid $200 and am looking for a fair value.

I believe I also have 2 pcb's, 1 for Q*bert and 1 for the original Gauntlet. 

I have no idea of what any of this would go for these days, but I also do not want to destroy these pieces of history which in some cases are +40 years old, or at least +30 years old. 

All items are at a location in Minnesota and my parents are never going to ship anything so any offers would require someone to make the exchange in person.

Again any valuations, or someplace that they can take them to would be appreciated (in Minnesota).

Thanks