| David Walliams Annual 2025 | castlebooks.com.au | 4 AUD | 22.99 AUD | −82.6% |
| Harsh Times | castlebooks.com.au | 6 AUD | 32.99 AUD | −81.8% |
| Calm: Working through life's daily stresses to find a peaceful centre | castlebooks.com.au | 5 AUD | 26.99 AUD | −81.5% |
| Good Morning, Good Night Deck: Good Morning, Good Night Deck | castlebooks.com.au | 8 AUD | 39.99 AUD | −80% |
| Worldwide Graphic Design Scandinavia | castlebooks.com.au | 10 AUD | 44.95 AUD | −77.8% |
| Wise Words from Black Icons: Quotes to Empower, Uplift and Inspire | castlebooks.com.au | 4 AUD | 17.99 AUD | −77.8% |
| Are You Watching Me?: DS Claire Boyle 2: a totally gripping story of obsession with a chilling twist | castlebooks.com.au | 5 AUD | 20.99 AUD | −76.2% |
| Camp Cocktails: Easy, Fun, and Delicious Drinks for the Great Outdoors | castlebooks.com.au | 12 AUD | 49.99 AUD | −76% |
| Anatomy of a Nation: A History of British Identity in 50 Documents | castlebooks.com.au | 20 AUD | 75 AUD | −73.3% |
| Youthjuice: American Psycho meets The Substance in this gripping fem-gore | castlebooks.com.au | 15 AUD | 55 AUD | −72.7% |
| Fighting for Our Friendships: The Science and Art of Conflict and Connection in Women's Relationships | castlebooks.com.au | 15 AUD | 55 AUD | −72.7% |
| All the Colours of the Dark: The Instant Sunday Times Bestseller - 'a | castlebooks.com.au | 15 AUD | 55 AUD | −72.7% |
| The Beasts of Paris | castlebooks.com.au | 15 AUD | 55 AUD | −72.7% |
| My Animals, and Other Animals: A memoir of sorts | castlebooks.com.au | 17.5 AUD | 59.99 AUD | −70.8% |
| Alien - Sea of Sorrows (Book 2) | castlebooks.com.au | 5 AUD | 16.99 AUD | −70.6% |
| Over My Dead Body: 'I couldn't put this fabulous, first class, five star read down.' JANICE HALLETT | castlebooks.com.au | 15 AUD | 49.99 AUD | −70% |
| Death of a Spy: A Hamish Macbeth Mystery | castlebooks.com.au | 15 AUD | 49.99 AUD | −70% |
| The Lonely Century: A Call to Reconnect | castlebooks.com.au | 15 AUD | 49.99 AUD | −70% |
| Filterworld: How Algorithms Make Everything the Same | castlebooks.com.au | 15 AUD | 49.99 AUD | −70% |
| Beautiful People: My Thirteen Truths About Disability | castlebooks.com.au | 15 AUD | 49.99 AUD | −70% |
| Good for a Girl: My Life Running in a Man's World - WINNER OF THE WILLIAM HILL SPORTS BOOK OF THE YEAR AWARD 2023 | castlebooks.com.au | 15 AUD | 49.99 AUD | −70% |
| The Joy of Lettering: A creative exploration of contemporary hand lettering, typography & illustrated typeface | castlebooks.com.au | 10 AUD | 32.99 AUD | −69.7% |
| Tom Clancy Line of Demarcation: Jack Ryan, Jr. is caught in a deadly web of lies in this thrilling addition to the No.1 bestselling series | castlebooks.com.au | 20 AUD | 65 AUD | −69.2% |
| Colored Television: Longlisted for the Carnegie Medal 2025 | castlebooks.com.au | 17.5 AUD | 55 AUD | −68.2% |
| Kavithri: The Indian-inspired progression fantasy thriller | castlebooks.com.au | 17.5 AUD | 55 AUD | −68.2% |
| The Black Loch: an explosive return to the hebrides and the | castlebooks.com.au | 17.5 AUD | 55 AUD | −68.2% |
| Same As It Ever Was: An immersive and joyful read from the author of Reese's Bookclub pick The Most Fun We Ever Had | castlebooks.com.au | 17.5 AUD | 55 AUD | −68.2% |
| The Moonlight Market: Romantasy meets Romeo and Juliet in this spellbinding modern fairytale from the million-copy bestseller | castlebooks.com.au | 17.5 AUD | 55 AUD | −68.2% |
| Lord of the Fading Lands | castlebooks.com.au | 12 AUD | 36.99 AUD | −67.6% |
| Man Down: Why Men Are Unhappy and What We Can Do About It | castlebooks.com.au | 12 AUD | 36.99 AUD | −67.6% |
| Exit Wounds: A breathtakingly unputdownable crime thriller | castlebooks.com.au | 20 AUD | 59.99 AUD | −66.7% |
| Borgata: Clash of Titans: A History of the American Mafia | castlebooks.com.au | 20 AUD | 59.99 AUD | −66.7% |
| Never Understood: The Jesus and Mary Chain | castlebooks.com.au | 20 AUD | 59.99 AUD | −66.7% |
| Lord of Ruin: the addictive Sunday Times bestselling series | castlebooks.com.au | 20 AUD | 59.99 AUD | −66.7% |
| The Stolen Hours | castlebooks.com.au | 15 AUD | 45 AUD | −66.7% |
| To The Strongest: 'Terrific series' Conn Iggulden | castlebooks.com.au | 10 AUD | 29.99 AUD | −66.7% |
| New York Pop-Up | castlebooks.com.au | 17.5 AUD | 52 AUD | −66.3% |
| The Neuroscience of Manifesting: The Magical Science of Getting the Life You Want | castlebooks.com.au | 12 AUD | 34.99 AUD | −65.7% |
| The Cult of We: WeWork and the Great Start-Up Delusion | castlebooks.com.au | 12 AUD | 34.99 AUD | −65.7% |
| Mother's Boy: A beautifully crafted novel of war, Cornwall, and the | castlebooks.com.au | 12 AUD | 34.99 AUD | −65.7% |