Originally Posted by Salamando3000

Passes was probably a poor choice of words on my part. The steam definition of passes refers to what Fox described - essentially temporary demos.

What I meant to say...Most major releases come in Four packs, which contain four copies of the same game, at a cheaper price per game. Usually not too hard to find three other people and grab a game for less than msrp.

Take for example Left 4 Dead 2 (http://store.steampowered.com/app/550/). On Steam's page you'll see it costs 50 bucks, but you can buy four for 150 (~37.50 per game). You find three other people who want the game, you can get a decent discount. Each will be the full-fledged game, in this case.