Do you remember Video 2000 as well?
I too haven't seen this since the heady 1980's - I'm sure, just like many others my age, we had a well dodgy ice cream van which used to visit our street weekly and used to have a...ahem...'varied' selection of nasties and xxx titles, and I always remember that when I rented "Nightmares..." (for my dad of course!) it came in a "Star Wars" case!