Next best price = The Hut @£10.97
Can't find this on IMDb - Not a good sign. Posted it because it hasn't been out long and £8 is a huge price difference.
It might be an uncut version of some 2.7/10 rated film called Dr. Rage???
Based on actual events, Michael Dare is ordered to enter a psychiatric facility for rage disorder. Here in The Straun House, he, along with other patients, is subject to a series of tortuous chemical injections and mutilating medical procedures beyond the darkest imagination.
This horrifying institution still operates today.