I'd go with the same although maybe around 70-80 to someone on here (non sellers), if none of the pages are loose. You don't see that many original ones up for sale and it's normally something people need to complete their Palitoy Death Star.
Yes I agree more or less with the valuations given. A totally mint one could go higher today. I won a mint example years ago that someone had tucked away in the late 70s for £107 odd which was my max bid :|