That's partly because the dominant platform for electronic conveyancing, PEXA, has a monopoly. Only licensed professionals who pay subscription fees can access PEXA. This removes competitive pressure on conveyancing fees because self-represented buyers must use a slower, riskier, non-standard paper process.

https://www.afr.com/companies/financial-services/nsw-product...

https://www.productivity.nsw.gov.au/market-study-on-econveya...