It's a cool poster and an easy price to live with.
Is it a daybill? Not in my mind. The horizontal format, lack of rating and no printer's information all go against it. For a major release like TOD the rating would definitely have been on an Australian printed piece.
Seeing the posters available in UK confirms my suspicions. I think it is a Brit promo poster, probably used in Australia for video.
As I mentioned in another thread we were using Brit 1 sheets for Bond films in the eighties. I have several here.
We also used Brit material for video. The Return of the Living Dead quad Rick posted just recently came out of a video store.
So there you go!