Thanks for letting me know, I might cancel it then and wait for the price to go down.
So its not a horror then?
I imagine the price will come down fairly quickly for The Purge, especially on DVD, you'd probably be able to pick it up for a fiver in a few months.
It was marketed as a horror movie, but it's more of a home invasion thriller with a slight sci-fi edge. If you want to see a home invasion horror movie I'd recommend 'You're Next' that came out at the cinema a few weeks ago, that's more of an outright horror movie than The Purge (imo) even though they have a similar premise.