True, not exactly a cheap pdf.As an aside, this PDF is pretty pricey. That's okay, I believe people should be able to make real money writing (as a freelancer and author myself) but the preview does not give the impression of a professional grade product. Can you offer a more comprehensive review of it, or point me to one, before I would spend so much on it?
Personally, my group has just started using it, so I don't have a lot of concrete data on how well it works. So far, they just go for the bragging for extra XP as the most common option (which makes me think it is too good).
I did find a review here:

[REVIEW] On Downtime and Demesnes
Downtime and Demesnes On Downtime and Demesnes (2019) by Courtney C. Campbell Published by Hack & Slash Publishing Old-school...
I agree with the point it makes about the peasant and noble lists, but those are a small part of a 250+ page book. I don't intend to use them, anyway.
The kickstarter page may also have more details here:

On Downtime and Demesnes
A book written as a resource for downtime activities in tabletop role-playing games that motivate players in sandbox style campaigns.
The author was providing a manuscript download to backers during the kickstarter, unfortunately it has ended.