Coworker alerted me to the deal, but it appears it is front page at SD now. The game activates on Steam. Lowest price I've seen for the game.
http://slickdeals.net/permadeal/93622/gamestop-dishonored-pc-digital-download
http://slickdeals.net/permadeal/93622/gamestop-dishonored-pc-digital-download