Grany
Where did they get the money to buy that huge estate with many, many acres. Asked for an increase in funding and bought it with that. No inheritance tax paid. There are calls for RF to pay reparation for their colonial past and in which the Windsors benefited enormously and still do. In 70s Queen had a transparency law changed to hide her embarrassing wealth. RF looking after own interests its all they do.
If you are talking of Balmoral, Queen Victoria and Prince Albert bought it out of her private fortune, which had nothing whatsoever to do either with the Duchy of Lancaster or any government funding of her day.
Balmoral is still a private estate, and whether you believe it or not, no state funding goes to its upkeep. The royal residence in Scotland is Holyrood House in Edinburgh.