You guys know I have a few AD&D 2nd edition box sets that I picked up because they gave lots more detail back then about the worlds. I use the Lands of Intrigue box set for my D&D game, since it has books for Tethyr and Amn, and I bought the Calimport book too for the same reason. I also own a 2nd edition Ravenloft box set and a few other Ravenloft books.
Well, yesterday I went with my mom to this consignment/resale shop that's over by China Gate because she wanted to check it out. I found some 2nd edition boxed sets for sale there at $5 apiece and decided to get a few. I have some box sets for Dark Sun, World of Greyhawk, and Forgotten Realms since those interested me. There was another Dark Sun box that I passed up, as well as a Spelljammer box and some Monstrous Compendiums.
I haven't looked at them in any detail yet, though Alex and I found some old character sheets stuck in the Dark Sun box and had a good laugh at the characters described on them. But if anybody is interested in playing in one of these worlds someday, we might get some good use out of the world information in these sets.