I personally find this topic very interesting and one that I also practiced in firearms collecting. A good example I think is below...
Colt single action army values range usually between $2,000 - millions right now due to supply of course but also demand. Most will fly off the market within a day of going up. However what is interesting and also a little concerning to me is that most collectors are in the age group of 50-80 years old. Also most will tell you they collect due to watching spaghetti westerns as a child.
Now what does this have to do with comic collecting? Well alike, I look in the gold and silver age market place here and surely and rightfully so they cost a huge premium over bronze and copper, BUT what I wonder is what is the driving force of the demand and what is the age group of most of the collectors. Another factor that can't be ignored is most adults past the age of say 30 have more of a disposable income than younger for sure. But still...I have to wonder what is the future value of gold, silver, and even bronze age books might be going forward. And a final piece of the puzzle I believe is the fact that before Disney, Marvel went into bankruptcy (so what does that say for comic collecting value?). But I think the key to the answer might or has to lie with Disney and what they have brought to the table. Mainly the movies and Marvel in general going forward.
Opinions?