I understand what you mean, and going for free alternatives is a possibility.
Nevertheless, for some people (who are my targeted audience), paying for a to-do list, calendar, and additional features can be quite expensive, and they are often looking for a central hub for their productivity needs, which is what I am delivering with this template made for Obsidian.
There are actually 3 different packages:
1. The boilerplate for developers: $19
The full code with the compiler, my best snippets and lifetime updates.
2. The full course: $59
The full course with all my best practices for website optimizations, SEO and mindset.
(actually everything is explained on the website)
Nevertheless, for some people (who are my targeted audience), paying for a to-do list, calendar, and additional features can be quite expensive, and they are often looking for a central hub for their productivity needs, which is what I am delivering with this template made for Obsidian.