Steam occasionally add or removes the discounts so you most likely caught it when discount was removed. That is original price, I believe. Oh wait no, it was 45$ when I checked it first time in the day of release.
Edited by Kein (09/01/12 04:47 AM)
"If you would take a man's life, you owe it to him to look into his eyes and hear his final words." (c) G.R.R. Martin