Dota 2, 11 copies for Showdown Effect/Guns Of Icarus Online/ Free.

I currently have 11 copies of Dota 2 to giveaway, what i would like (in return) for them is 'The Showdown Effect' or 'Guns of Icarus Online' . I am willing to accept keys for games of a lesser price so long as it i a vaguely fair deal although i am also possibly willing to give these copies away for free since they really re beginning to clog up my inventory.