As part of the Indiebound programme, Nielsen BookScan has generously agreed to supply a weekly independent Top 20 bestsellers report.

1 The 78-Storey Treehouse
Andy Griffiths & Terry Denton
Pan Macmillan  $17.99
9781743535004
2 Harry Potter and the Cursed Child  J. K. Rowling, Jack Thorne & John Tiffany
Hachette $49.99
9780751565355
3 Things That Matter: Stories of Life & Death from an Intensive Care Specialist
Dr David Galler
Allen & Unwin $36.99
9781877505645
4 Richie McCaw 148
Richie McCaw
Upstart Press  $69.99
9781927262788
5 Can You Tolerate This?
Ashleigh Young
Victoria University Press $30.00
9781776560769
6 Hera Lindsay Bird
by Hera Lindsay Bird
Victoria University Press $25.00
9781776560714
7 Selected Poems
Jenny Bornholdt
Victoria University Press $40.00
9781776560660
8 Les Parisiennes: How the Women of Paris Lived, Loved and Died in the 1940s 
Anne Sebba
Weidenfeld & Nicolson $39.99
9781474601733
9 Barkskins
Annie Proulx
Fourth Estate  $36.99
9780008191764
10 The World's Worst Children
David Walliams
HarperCollins $24.99
9780008197049
11 Salt River Songs
Sam Hunt
Potton & Burton $24.99
9780947503031
12 The Black Widow
Daniel Silva
HarperCollins  $36.99
9780732298951
13 The Last Painting of Sara De Vos
Dominic Smith
Allen & Unwin $36.99
9781743439951
14 All Day at the Movies
Fiona Kidman
Vintage  $38.00
9781775538905
15 All the Light We Cannot See Anthony Doerr
Fourth Estate $24.99
9780007548699
16
Truly Madly Guilty
Liane Moriarty
Pan Macmillan  $37.99
9781743534915
17 The Gustav Sonata
Rose Tremain
Random House  $35.00
9781784740047
18 ANZAC Heroes
Maria Gill
Scholastic  $30.00
9781775433637
19 The Great Kiwi ABC Book Donovan Bixley
Upstart Press  $19.99
9781927262719
20 Tickle My Ears
Jorg Muhle
Gecko Press $14.99
9781776570768