I wasn't sure whether to post this here or in Arcade Alley, but there's someone in my hometown that's selling some arcade games. Personally, I don't care to keep them for myself but maybe buying to resell is worth it. All of the cabinets show some wear; none of them are in tip-top condition. Some maybe would even consider poor condition. The games are:

Choplifter
Fire Truck
Q*Bert
Wizard of Wor
Sega Turbo - NOT WORKING, he said it would need some work
Tempest - NOT WORKING
Zaxxon
Galaxion - needs a monitor.

If I were to buy all of this, approximately what would be a good offer?