I've been around long enough to see a lot of things change. I collected Blue Books and Gun Digests for over 45 years. The early issues of both brought over $100 each back when that much money would buy way more than a weeks worth of fast food lunches. I've even got some hardcover versions. Barry Fain, Steven Fjestad and John Amber were legends...
The internet changed everything and you almost can't give 'em away today. There's a lot of good information in both and I can't bring myself to throw them away. I should have bought stock in Walmart!