The amount of (stupid amount by the way) people that don't own basic game packs like The Orange Box is just, silly. So I'm compiling a short list of games that you can get on G2Play for cheap, and I do mean dirt cheap. These guys are legit and I've used them many times before. Note: In the event you get a key that's already been used (can happen), just shoot them a ticket / email and ask to exchange it for another key. Note 2: The cut edition of the game is a censored copy. These are used in countries like Germany / Australia. Avoid these unless you mind missing gore etc. So get the Uncut versions. The Orange Box - £8.98 / $13.96 CS1.6 + 8 Goldsource games - £2.85 / $4.43 Left 4 Dead 2 - £15.92 / $24.76 Left 4 Dead - £8.16 / $12.69 Metro 2033 - £14.70 / $22.85 Stalker: Call of Pripyat - £11.43 / $17.77 Those are just a few offers there, so really for so cheap, you have no excuse to not own them.
http://www.g2play.net/store/Fallout-New-Vegas-Steam-Key-Pre-Order.html 44 Bucks. Talk about severe price matching.
You also don't get the caravan pack, and they give you the key once the game is released, and its fallout without bits of bodies everywhere no :v
I could write a serverplugin for anyone who gets the cut versions to re-enable gore. At least I think I can (I can do it but I don't know if it works)