
According to google and some other websites:
1. 100 million won = $68,569.23 as of January 17, 2025.
2. The average american wage is $63k. So The amount Na Haesoo is requesting is about 1 year's worth of work.
3. The average korean wage is $34k. So The amount carries abit further in Korea and amounts to 2 years worth of work.
4. The average korean cost of living for a single individual is roughly 1,600,000 won. Yearly, that is around 19,200,000 won.
5. Given this information, 100 million won will last 5 years if there is no investment involved and the money is just spent on daily necessities, rent, and utilities.
I think the prince is a fake. That's why the empress went crazy and k worded herself. She realized that the prince that came back "injured" isn't her son but the doctor. Nobody believed her and either she went insane or the doctor controlled her to k word herself.