At this price, it is an expensive lecture in Inflearn. However, if you listen to the lecture content, it feels like they are giving a live coding lecture without any prior class preparation and just looking at apps made in Android lectures. It is an expensive lecture... but it doesn't seem like a lecture that invested a lot of time. The lecture tempo is slow and since it is live coding, errors occur and there is time to debug them, so although it is 10 hours of running time, the volume feels smaller. Also, the two apps made here are so simple that even after listening to it, I still have questions about why I should use Clean Architecture. I learned the theory through this lecture, but since I only did the practical app training with simple apps, I don't really get a feel for how to apply Clean Architecture to large-scale apps.