Hi I am desperately needing some help please

My 2003 Jeep Liberty 3.7 Auto petrol ( Cherokee) has a defective ECU after painstaking and costly diagnostic work by my local Jeep dealer in western Australia
A new ECN part no. 56044624AE is $1500 in Australia but $350 in the US
All the parts outlets in the US are saying its an export only part and they cannot sell one to me and I have to buy it in Australia ( a 6 week wait at best)
Can anyone help me with the following:
Is there an ECU that will work that is made for US Libertys which parts dealers will sell to me?
Is someone able to give me their VIN number so I can purchase one (I have a US address to send to) then get sent from there to Aus.
I can deposit the money first into your account.
Regards
John Bollans
Perth, Western Australia