This article is from San Diego's Union-Tribune:
To summarize, it suggests how worthless our Star Wars collections are using Hot Wheels as the example. The article also addresses comic books and Disney stuff, too.
Fortunately, I wanted to make dioramas to "commemorate" the Star Wars fantasies I've loved since I was a child. I never "invested" in the Star Wars products thinking it'd be worth something (like the vintage years' items). But I remember that craze when there were crowds in front of the stores before they opened and scalpers rushed to get "VHTF" items.
However, if you can hang on to your stuff in these difficult times and you want it all to have monetary value, it may one day return to that.
What hurts me actually is that when I was hospitalized (the first time in 2005 when I had an aneurysm burst in my brain) all my things were put into storage and I still have no idea if I retained everything. I may be missing out on replacing items at a bargain, but first I need a bigger home in order to sort everything out. But that too might be purchased at a bargain right now (but not with money from the sale of most collectibles).