Counter Strike: Source Retail - Question about creating a giveaway.

So I just snagged a copy out of the bargain bin at my local Fred Meyer, and I have all the games, so I want to grant someone else the chance to play 'em, when I can decide what kind of giveaway I want to do.

Anyway, I want to make sure I select the right game. The retail version comes with CS:S, HL2DM, and DoD:S. So I would list it as the Source Multiplayer Pack, right? It's only got one CD key, which I'm assuming will give all three games to whoever activates it. Someone please correct me if I'm wrong.