Will be £25 and £13 instore respectively I would imagine.
Batman: Return to Arkham:
Includes critically acclaimed titles Batman: Arkham Asylum and Batman: Arkham City
Updated visuals optimized for PlayStation®4 and Xbox One
Comprehensive versions include all previously released DLC and additional content
Batman: Arkham Asylum exposes players to a unique, dark and atmospheric adventure that takes them to the depths of Arkham Asylum – Gotham’s psychiatric hospital for the criminally insane. Move in the shadows, instigate fear amongst their enemies and confront The Joker and Gotham City’s most notorious villains who have taken over the asylum.
Batman: Arkham City builds upon the intense, atmospheric foundation of Batman: Arkham Asylum, sending players soaring into Arkham City - five times larger than the game world in Batman: Arkham Asylum - and the new maximum security home for all of Gotham City’s thugs, gangsters and insane criminal masterminds.