There are nice visuals---I like the worn-looking tech in the first two (release order) movies, which I saw---but I've never been a fan of knights of any stripe.
I prefer science fiction to heroic fantasy.
But from what I've heard, wouldn't it make more sense to charge $140 for the first three released, and $80 for all six?
(And, yes, Jaws was never my speed---I figured that either it would leave me cold, which would make it a waste of money, or it would scare me, which I don't like---sometimes I think I'm much simpler than many people...I hate roller-coasters.)