Any kind of popular collectible will generate similar stories of woe.
I was an army brat, and every move we made had a weight allowance. For me, that meant every move, my comic book collection shot given away to the pediatric ward of the hospital, because paper is heavy. We didn't find out how valuable some of my comics were until our 3rd move...
And of course, there's the flip side. Know anyone who invested in Beanie Babies?