I really like this movie, one of the very first "18" rated horrors I managed to get my hands on some years under age back in the late 80's
You could order the German DVD either from DTM:
http://shop.dtm.at/product_info.php?products_id=29709
Or "Beyond Media":
http://www.beyond-media.at/shop/inde...a00WOR0U1Yhn0o
Moriarty is great in it and cult director Samuel Fuller as a Van-Helsing-esque vampire hunter is a real scene stealer!