Hi brother,
You are registered in any site of ebay ,its just okay.You start listing in Australia no problem.Just change your address ,phone # etc thats all.This is what I understand.
But probably you may have to have a separate account #,because your present account is a INR account. That is also nothing great.You may ask the CS of Australia.They will do something.
I listed in Astralia,UK and USA.I still list in US site.No problem with my INR account.That works just the same.I pay in INR.
But you will miss the weekly cheks of our dear eBay.in.
Cant help.
Thanx,
Truly,
Amitava