Here is the link to my peer’s post:

https://crystal.opened.ca/revised-post-4/

I think my peer did a good job because she had a correct understanding of the course materials. Also, to support her opinion, she searched for additional articles and cited them in her post. I have the same experience when she talked about the high cost of the textbook. It is true that the textbook is too expensive, many of which are higher than 200 dollars! As a result, many of us choose to buy second-handed books or use e-books. We really should take the economic situation into account when we design a form of learning.