Was looking around for this and stumbled upon the daily deal on TheHut for £12.93 - think it's the cheapest it has been and seems to be going for more on a certain auction site
Plus Quidco and if you still have Walkers codes, cheaper still.
It seems to be approaching cult status - so get it while you can (then again it may not :) )
Blurb as follows:-
Release Date: 29 October 2010
Deadly Premonition follows the adventures of Special Agent Francis York Morgan sent to the fictional Pacific Northwest town of Greenvale to investigate the brutal murder of a young local beauty. Amidst the backdrop of soaring mountains and a town filled with eccentric natives, Agent Morgan must solve the mystery of the Red Seed Murders and stay alive in a place where supernatural creatures and a legendary folklore killer seek to end his investigation permanently.