looking to get back into trading, page-40

sandminer....this is a quote where it is obvious where you make a simple mistake:

"Let me try this your way;
You start by saying:
Oil is US$100
The A$ is 80c to the US$
OK so far, but
having received the goods the buyer transfers US$100 into the sellers bank account in Australia.
The bank applies the currency exchange rate, crediting the sellers account with A$80 (not A$125)."
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last sentence is where you are going wrong!

the bank applies the FOREX rate and seller gets 125 AUD !!!

(remeber that 1 AUD was 0.80 USD...not other way around)

at parity you get less aussies than at 0.80 (20% less to be exact...) which makes company profit 20% lower with same amount of work)