That's $189.56 US Dollars or 174.96 Euros. That's very pricey for a tour and tea. In comparison here in New York, the Kykuit Rockefeller Estate charged us last year only $75.00 (59.34 pounds) for the 3-hour grand tour that included the inside home museum and the enormous outside park via bus tour. Kykuit was the home of the guilded age oil millionaires that build the Museum of Modern Art (MoMA) in NYC to put the billion-dollar art surplus that could not fit in the house, since in the basement museum they have the walls packed with Picasso's and Andy Warhol's. The Rockefeller family still owns the estate and uses one building on the grounds as the Charities and other business headquarters.
So, if anyone visits Balmoral, I hope the expense is worth the money and it becomes open to the public when not in use by the family.