Of all the games I've seen released in the last year, I'm sure Dishonored is worth $60. That said, I remember the Summer Steam sale when Skyrim hit $29.99. Dishonored, being a new franchise, I can't help thinking there'll be a Steam sale on it to push brand awareness. Possibly as early as Halloween. Possibly in a month for the inevitable BF Steam sale. And certainly by Christmas, which is probably about two months from now.
Not sure how low it'll go, but I have to think it'll be lower than $45. That's what keeps me from punching out and taking the $45. If this had been released during the summer, I probably would not have had the patience to wait.
Bethesda, see what you get for doing what everyone else does and pack all your games in a small set of months? For shame.