Severin has a CALIGULA Blu-ray bundle. A two pack with CALIGULA: THE UNTOLD STORY (1982), directed by Joe D’Amato, and CALIGULA AND MESSALINA (1981), directed by Bruno Mattei. Now I’m aware that these types of ‘x-rated’ PEPLUM movies are not for everyone but it’s still part of the genre, at one extreme. Besides, the Mattei epic uses a lot of scenes from old PEPLUM movies in it which is always fun to spot.
I have a brief overview of CALIGULA AND MESSALINA at PEPLUM TV blog.