I strongly question whether the depth of this course justifies its 300,000 KRW price tag. I am a student who usually leaves 5-star ratings for most courses, but I feel compelled to leave an honest review for the public interest. Compared to top-tier domestic Spring courses priced around 100,000 KRW, it is difficult to understand why this course is three times more expensive at 300,000 KRW. A significant portion of the lectures consists of simply listing or reading through official guidebooks. As someone who expected the instructor's unique insights or practical know-how, I was very disappointed. I couldn't find any significant difference between this and just reading the official documentation on my own. If you are considering taking this course and paying such a high fee, I strongly recommend that you reconsider the density of the curriculum.