Down here, I think the poorer movies at the box office get released faster than successful ones. I think is due to movie companies trying to cash in faster on DVD releases for poorer movies so they can make up the money they lost etc. I know for instance that [I]Sin City[I] and ROTS didn't come out on DVD until like November/December last year. Whereas I've seen movies that have done poorly come out within a month of their theatrical release.