Why is tax removed from orders sent from Australia to overseas destinations?
If you are based in Australia, tax is removed on orders that are sent from Australia to overseas locations due to a ruling from the tax department: http://ato.gov.au/businesses/content.asp?doc=/content/18428.htm&page=1&pc=001/003/049/002/001&mnu=44291&mfp=001/003&st=&cy=1