Next best is £7.43 at The Hut.
The Descent: On a daredevil caving holiday six girls are trapped underground when an unexpected rock fall blocks their exit. Searching the maze of tunnels for a way out, they find themselves hunted by a race of fearless, hungry predators,once humanoid but now monstrously adapted to live in the dark.
Dog Soldiers: A band of British Soldiers are sent to the Scottish Highlands on special training manoeuvres. Their biggest worry - stuck in the middle of nowhere and missing a vital England Vs. Germany World Cup qualifier. Things take a turn for the worse when they stumble upon Captain Ryan - who appears to be the sole survivor of a special operations team that were literally torn to pieces. Ryan refuses to disclose the secret behind his mission, even though whoever or whatever ate his men seems hungry for seconds.
28 Days Later: A powerful virus is unleashed. Transmitted in a drop of blood and devastating within seconds, the virus locks those infected into a permanent state of murderous rage. Within 28 days the country is overwhelmed and a handful of survivors begin their attempts to salvage a future , little realising that the deadly virus is not the only thing that threatens them.