I was stoked to have the original, light blue Topps Star Wars cards, purchased during the initial offering, circa 1977. About 10 years ago I found out they're not worth spit.
Before moving to Japan in 2001, I sold my loose, decidedly non-mint figures from Star Wars, Raiders, and Disney's Black Hole. The collectors shop nearby gave me $200 for them. We both feel we got the better end of the deal.