As far as my research confirms, none of these movies are super rare, but the covers are to DIE for (hehe).
Legacy of Blood (the cover is 1,000,000x cooler than the movie!)
House of Seven Corpses
Alice, Sweet Alice
Frankenstein and the Monster from Hell
Maniac (1980)What I'm looking for:
Revenge of the Ninja
Return of Living Dead 3
Plan 10 from Outer Space
Alice (Jan Svankmajer)
Or if you are interested, just let me know and we'll talk.