BookPeople has an excellent member discount freight deal with digital freight management company Couriers & Freight.
Couriers & Freight is a comparison site that allows users to compare rates across multiply providers and then make pay as you go bookings. Users can either use the service for 'one-off' bookings or set up 'a pay as you go' or 7-day credit account with additional features such as stored addresses and reporting. The website is backed up by a IRL customer service team that can assist with bookings.
This service is ideal for sending multiple box returns to publishers or for smaller packages when Australia Post delays are a concern.
For the member DISCOUNT code plus 'pay as you go' or a 7-day credit account forms log in below.