Personally, I found it logically convincing and enjoyable to watch.
Value for money is important, but if you have some spare cash, upgrades are always fun!
The photo attached below summarizes the final arrangement from the video. It's said that the value for money decreases as you go down.
It's in English, but listening with Korean audio tracks makes it somewhat enjoyable.
https://youtu.be/KX2iUijHQPk?si=7ZoctdYH9SeRwr4p
