B&N still has the booklets for the right price
Not sure how much inventory they have but you can order both here
Part 4:
https://www.barnesandnoble.com/w/unreported-truths-about-covid-19-and-lockdowns-alex-berenson/1139426559?ean=9781953039170
Parts 1-3:
https://www.barnesandnoble.com/w/unreported-truths-about-covid-19-and-lockdowns-alex-berenson/1139426558?ean=9781953039187
The ebooks are also available from both Apple and B&N.
Thanks for bearing with me on this!