I think the set is softcover from the comments in the reviews.
Seems a good price for the set.
Product details
Publisher : Simon & Schuster Australia (1 November 2017)
Language : English
Hardcover : 1024 pages
ISBN-10 : 1925596486
ISBN-13 : 978-1925596489
Dimensions : 15.5 x 14 x 15.5 cm
WT !!!!
https://files.ozbargain.com.au/upload/14180/92440/grug.jpg