Try a Google search on some of the names and stickers on the planes and parts you have. The heli has "Miniature Aircraft" stickers on it, which is a heli model manufacturer. The engine in it appears to be an OS 61VF-H from around 1982-83.

http://www.osengines.com/history/ostimeline10.html

The foam airplane in post # 6 appears to be a Sukhoi SU-27 target drone which was made for the US military. They were being sold around this website for about $75 or so each, new in the crate. Often I saw them sell where the shipping was more than the model cost.

The rest of the pics in post 6 , except the heli, appear to be control line planes and a box of parts. Try the control line forum for more ID info.

For more exact identifications, you should post pictures in the appropriate forums.

FWIW, if you're going to be picking RC items for resale, you've got to have a very good idea of what you're buying. Everyone thinks RC stuff is worth mega-bucks just because it was very expensive when purchased. RC items lose value very quickly, except for certain categories and collector quality items.