:As I and others noted in our edit summaries of the article, you are removing notable and verifiable information. The source that you have recently been trying to add instead states that the price (in 2008) was 390 million euros which is approx. 530 million dollars instead of the 506 million dollars. That information could be added instead, or a comment that the price was "as of 2008" or similar, but the consensus appears to be keeping the price information for the house in some form at least. If you feel that it should be removed you should use the talk page of the article before continuing to alter the information.