Next best is £7.99 at Play. I'm guessing it's £6 instore.
Mandy Lane (Amber Heard) is an unattainable object of adolescent lust for all the boys in her high school. Invited on a weekend away to a remote ranch, shy Mandy sees it as a chance to cement some newly formed friendships. The boys see it as a chance to finally get with Mandy. As night falls, joints are rolled, kegs are drunk and pills are popped, with Mandy maintaining a polite distance from all of the debauchery. She thinks the drunken 'come-ons' will be the worst of it all, but she is horrifyingly mistaken. As events take a turn for the worse, it becomes clear that a secret admirer is harbouring some terrifying ulterior motives.
Smart, sexy and savvy, All The Boys Love Mandy Lane is a gripping horror thriller from director Jonathan Levine, winner of the Audience Award at the Sundance Film Festival (2008).