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Hi And Welcome to Flying Solo It is great to have you!
Thank you for joining our community and posting.
I kind of understand what you are asking but it is still a little unclear.
What upfront costs do you need to calculate? Eg, If insurance is one of them, you will need to speak to several Insurance Brokers and write some numbers down.
One tip is that your costs, should not be central to your supplier negotiations as they should be governed by industry norms – so that is another avenue of research to pursue.
Your costs are your issue, not your supplier’s. There is some validity to bringing up costs in Australia vs the country of origin if they are different so that your supplier has context and understanding but even that conversation should be limited.
Over the years, there have been several good discussions here on Flying Solo on this topic so I do recommend you use the search function.
Cheers
~Paul