Two Scoops is solid, but it's also a $14 ebook, whereas Effective Django is free. Not really apples to apples.

This frustrates me. Three hours of time to watch a video, if you charge $50/hr means you spend $150 opportunity cost of time on the free version. Assuming the time to consume both is equal, it gives an equivalent cost of $150 vs $164, or put another way, the difference in cost is a rounding error.

It seems to me the only durable advantage to the free version is that if it isn't working out you can abandon it after 15 minutes at a fraction of the cost. If there were a credible way to sell knowledge products "satisfaction guaranteed" I'd think that people would be a lot less sensitive to the difference between free and $14.

Interesting, I hadn't heard about this. Here is a link for the lazy: https://django.2scoops.org/