Anyone willing to trade skins?

I pre-ordered Arkham City: Collectors Editon for my X-Box and got a Batman: The Dark Knight Returns Skin redeem code as well as a code for Arkham City related goodies for Gotham City Imposters, if anyone out there would be willing to trade the code 70's Batman, Batman Earth One, or Batman Beyond skins for them i'd be most appreciative but if not i'd understand.