Papers, Please is one of the more interesting social commentary games that have been making waves lately. Unlike some of those other games, Papers, Please actually saw success through Steam Greenlight. On the Greenlight page it was revealed that a new site went up to promote the game as well as its cost.
The website itself is interesting as it plays like a mini game. You are shown an immigration inspector and told to show proper ID. Play around with the site yourself for a minute if you're interested. As it turns out, visitors must bribe the inspector with a certain amount of money to succeed. The cost is $10 and that is actually how the developer chose to announce the price of Papers, Please.
On the site we also see the release window as Summer but that's all as an official date has not been decided yet.