A digital pdf version of the book is for sale for USD 30.
Buy and download the digital book here:
The paper version of the book was issued in June 2021 and sold out in January 2022. The price was 55 Euro (50 British Pounds).
A used copy of the book was in February 2023 sold at Cavendish Philatelic Auctions for 80 British Pounds + the 20% fee.
