A few suggestions:
www.hardcoreabductions.com - excellent selection and in English
www.powershotz.com - mostly bondage, but some rape available
www.videomayhem.com - large variety of Japanese and others
www.aahsex.com - European site
the next three have some rape along with more extreme content
www.necrovideos.com
www.psycho-thrillers.com
www.pkfstudios.com
Happy shopping.