Should I sell em?
If they are in good condition. I don't think there are much buyers though.
mine are all in great condition, i keep mine in a special space in my room where they stay clean, i'm thinking of putting them up on ebay or giving them to a friend who will enjoy them, i have way too many.
Smoke free homes are preferable. Air tight boxes as well.
i'm in a very smoke free home, would shadow boxes work?
Um, the comic stores normally would have like special cases. If not, they have dust on them. I'm not a certified collector, I just know mine are in sealed boxes.