The museum itself is wonderful and has a very interesting exposition. We always go with guests when they come to this museum. We called and ordered an individual tour for two people. Price: 1,500 for admission, 4,500 guided tour in Russian per person.
Bottom line: The main hall is closed, only two small ones are open. There is practically nothing to see. We went up to see the fortress on our own, it's open for entry, I highly recommend it, but still, it's great to do it after viewing the main exhibition.
It's unpleasant and incomprehensible why they didn't say on the phone that the main hall was closed! And the tour will last only 15 minutes!!!