Booktopia is an online bookstore based in Australia, that offers:
Free shipping isn't available to everyone. Booktopia sends you an email when that option is available. During that time, you can pass the code to a third party (friend, family member, colleague, etc.). This is done because their shipping price is fixed, no matter how many things you order in one go. It's always $6.95.
This store offers their services only in Australia (including the rural areas) and New Zealand.