I saw this on the IAJGS Records Access Alert https://lists.iajgs.org/mailman/listinfo/records-access-alerts daily newsletter which links to The Sydney Morning Herald https://www.smh.com.au/politics/federal/archives-spent-1-million-fighting-palace-papers-case-20201022-p567i2.html article below. The article is much longer. The IAJGS Records Access Alert and newspaper article includes the courts have ruled another $1 million AUD to pay for the legal fees of the plaintiff.
By Nick Bonyhady October 22, 2020 4:12 P. M.
The National Archives spent $1 million fighting to stop Australians seeing the Palace Papers and faces spending that amount again on the legal costs of the historian who battled to get the documents released.
Meanwhile, thousands of secret foreign policy files gather dust in public service store rooms waiting for declassification as the archives complains of funding shortfalls.
Here’s the Wikipedia link from the IAJGS Records Access Alert article: https://en.wikipedia.org/wiki/1975_Australian_constitutional_crisis.