Star Trek VI is a 1080i-to-1080p conversion for crying out loud!
There's really only a semantic difference between the two when you're talking about film transfers - it's not like 1080i has half the resolution of 1080p in this case.
Since they only released 2, 4, 6 and 8 individually and never got around to the other six movies
Whatchoo talkin' bout? I can see 1, 3, 5, 7 all on Amazon.
DE