Want to pick up Batman: Arkham Asylum but your straightjacket is preventing you from somehow reaching that last $12 (we’re not going to ask why you already had the rest of it in hand)? Well the evil masterminds at SlickDeals.net have you covered.

Amazon.com is offering the game for $45 on PC and $53 on Xbox 360 and PlayStation 3 if you pre-order. If you use the coupon code 5OFFARKM when you check out, you’ll save a fiver off the already low price, knocking it down to $40 and $48 respectively, should you opt for free shipping. You’ll also receive the “Road to Arkham” comic as a thank you for pre-ordering.

And should you happen to do all of this via our Amazon portal located to the right, you’ll also receive a hearty thank you from us as well. The kickback will help keep our anti-psychotic meds refilled.

[Thanks to SlickDeals, via Joystiq]