Dealspwn: It's about time you got that Batman: Arkham Knight preorder sorted isn't it? How about a PS4 or Xbox One deal for just £36.76? This also comes with the Harley Quinn DLC. Use the voucher code below to get this super hot deal. We ran a deal about £1 cheaper a while back, but this is the cheapest console deal I've seen for a while and could be the cheapest preorder we'll see now before the June 23rd release date.