Yep can't tell for HODLHODL but volumes are so low on Robosats (between 0.5 and 1BTC per day) that you need to wait hours for your offer to be taken. When it comes to Australian dollars you won't have any people to take your offer cause nobody use it in your country (it says a lot about Bitcoiners mindset in some areas regarding KYC IMO sadly).

You need to use USD or EUR, it's the only solution I can give you right now, or use a negative premium.