Reply to "Cost of the Hobby and the Internet..."

The pre & post war stuff will almost certainly rise in value sometime in the next 10-20 years. As the demographic of the original collectors continues to age out, the market responded to thinning and liquidating collections by treating it as oversupply - in no small part due to the advancements you've mentioned above. Since it currently holds less value than we might expect, much of what returns to circulation with be misplaced, mis-handled, or otherwise leave the potential market. This will eventually produce the scarcity, and the increasing cachet "vintage" collectibles gather, that drives prices up.