Re: Baseball Cards
I collect as a kid and have bought cards on ebay in the past. I still go out and buy a pack of cards occasionally but that is about it. IMO the problem with the industry unless you are a legend of baseball, or a card from the 60's and before the only cards that are worth anything are rookies. Even then it is hit or miss.
I don't know who started it, Donruss Diamond Kings is the first I remember, but inserts and rookies are the only things worth anything anymore. Now you have "collectors" who will go in and buy a box, take out the inserts and rookies, and pitch the box. It got even more complicated with Bowman who started to insert minor league cards and then issued first edition cards when a player was drafted/signed. That pretty much made any "rookie" card worthless unless they were the first issued card.
I don't think the industry can come back to what it once was. It will still have a nitch market but anymore that is about it.