Comment by colinjoy

If you are going to use it as a knowledge base, you are probably looking at a few years of use.

Currently the closest match to this software I have installed is Quiver. Let’s compare costs over a period of 5 years:

Quiver: $9.99 Obsidian: $250.00

That may not be a lot of money to you personally, but it fits my mental model of “expensive” pretty well.