It is unusual that a book worth $25 million dollars should be displayed with the front cover open more than 180 degrees (which would put a lot of pressure on the joints and cause damage to the book) and with metal paper clips to hold the leaves open.
It is also unusual that they would think a photocopy would be worth $2 million. If it were authentic, access by researchers might be restricted, but I doubt if any precedent could be found for a photocopy of a unique manuscript being sold for such a high price.