Original (not hacked) subLOGIC Flight Simulator II, with box, both manuals (in excellent condition), map, and even the registration card.
Selling for $25 shipped to the lower 48 states.
Pictures at:
http://picasaweb.google.com/simplepractices/FSAppleIIStuff#5285047741236869682
http://picasaweb.google.com/simplepractices/FSAppleIIStuff#5285047749461156994
http://picasaweb.google.com/simplepractices/FSAppleIIStuff#5285047753794966290