Kinda got tripped up by this one last night when I purchased the THQ complete pack. Was going to give my extra copies of DoW2 and CoH to a friend. If you already own a game on steam and get it again via a bundle deal etc you dont necesarily get an 'extra copy' for you to gift. Its only specific situations where this occurs. I remember having HL2 and Ep1 then getting the valve bundle and recieving duplicates to gift, this lead me to believe it was the same for all purchases.