I've joined forces with the hobbyDB team to create a database of every Starbucks Mug ever made! You can use hobbyDB to manage your collection and wish list, show it off, find values for your mugs, and to trade, buy and sell. We currently have four volunteers and would love to have more join the team. If you'd like to help, contact the guys at hobbyDB.
Starbucks City Mugs 
How can i purchase the mug with australia logo?
You can try to buy it online on Ebay or go to the Facebook page and see if anyone would buy and ship it to you at their cost. Thanks!