Unseen Academicals

From Author Wars - https://authorwars.com/publications/unseen-academicals-942088.html

Overview:

Title: Unseen Academicals
Author: Terry Pratchett
Year: Unknown
ISBN-10: 9781407047294
Publisher: Transworld Digital
Price: £5.99
Binding: ebook
Type: Novel
Title Reference: Unseen Academicals
Notes: Price from Kobo (GB) as of 2023-03-18.
Print length of 439 pages listed by Kobo (GB); metadata claims 544 pages.
Metadata claims publication date of 2009-10-06 but copyright page has "Penguin paperback edition published 2022" so this clearly can't be any earlier.
"Cover Design © Leo Nickolls"
"Character Designs © Paul Kidby"
No publisher on title page, but copyright page has "TRANSWORLD"