Expenditure data is compiled by the Independent Parliamentary Expenses Authority (IPEA) and released under Creative Commons Licence (https://data.gov.au/data/dataset/9c4ad23f-ddf9-4838-b638-61966a29bd59).
In all fairness there are some good reasons for variance in expenditure. The IPEA points out: "When comparing expenditure between parliamentarians, it is important to take into account the parliamentarian's role, the size of their electorate, and their electorate's distance from the closest capital city and Canberra. Further information on why some offices may have higher travel expenditure can be found on the IPEA website Background on Expenditure Reporting page."
Note that this list includes some former politicians who are still being paid out of the public purse.
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
This is offered entirely 'as is' and should not be relied upon for any decisions of any sort.