Hello Patricia,
Welcome. I'm also in Australia....Geelong actually. I cannot help with Kindle questions, sorry, but I am very interested to hear how you go with a Kindle in Australia. I am surprised to hear that Amazon sent you a replacement to Australia.
Can I ask how you got your first Kindle? Was it from eBay? I considered a Kindle but then decided against it since the wireless feature wouldn't work here. I have an iLiad v2. I love the iLiad, but would consider a Kindle if Amazon would sell it here since I buy lots computer texts from Amazon already & I find their prices good (if only I didn't have to pay for shipping).
Jodi