For those who regret not buying this game the first day of sales at steam hopefully waiting for better deals to come. Today at Direct2Drive: Batman: Arkham Asylum 50% off. The same price than Steam last Thursday.
http://www.direct2drive.com/2/8233/product/Buy-Batman:-Arkham-Asylum-Download
http://www.direct2drive.com/2/8233/product/Buy-Batman:-Arkham-Asylum-Download