You really never know. There are some instances where it's even more valuable if it's still sealed. That always amazed me cause whenever I purchased an album, I'd play it. Plus, understandably, if in good condition they are worth more.
TIS
"Mankind must put an end to war before war puts an end to mankind. War will exist until that distant day when the conscientious objector enjoys the same reputation and prestige that the warrior does today." JFK