I think there are many factors that are driving em game prices up or down. Geography is one of course but I think one of the biggest factors is the age of the hobbiest these days. Older collectors are starting to retire from the hobby downsizing, and need to unload their games. That's why you're seeing 60s game prices stable or even drop. Harder to unload them. (ask JR about his Diamond Jack) 70s titles are still hot as there are lots of us in the 50 to 60 year old category of people that remember these games from their youth. I've said it before in other threads, these are just big toys and we're reliving our childhood! Early solid state titles are in the same pattern of increasing prices. In 10-15 years, 70s titles prices might decline/stabilize as we the current collectors decline as well.