I do love Penguins so anything related to that for less than $2 delivered to your home is a bargain. :)
"Discover the amazing world of the penguins, and learn about their lives and the myriad trials they face just to survive. Learn about the different species of these wonderful birds, how they hunt, escape predators, and bring up their young. Captive text and colour photographs bring the world of penguins vividly to life. A superb pictorial celebration of the planet's favourite birds. "
Would cost you roughly $10 from Angus & Robertson delivered.
Just a couple of other random titles from Booktopia's Spring Sale:
* Wet Dog for $15.95 vs. $25+ at The Nile and Angus & Robertson.
"Wet Dog is a hilarious series of dogs photographed during their least favorite activity: bath time."
* Great Migrations for $17.75 - this book would cost you over $50 at The Nile and Bookdepository, and is on sale at Angus & Robertson for roughly $27 delivered.
"At a riverbank in Africa's Serengeti, thousands of migrating wildebeest try desperately to cross as terrifying crocs feast on the galloping herds - which must attempt the river for a chance at survival. ...."