So they are asking the price of 10,000,000 pancakes? I get that (rich) cultivators are pay to win players and their monetary values get ridiculous but that is incredible considering that is the lower end of things.
It's not a good sign if the sect master needs more than 4 hours of sleep a night or he gets tired. Shouldn't he be able to go months with no food or drink or sleep? Also, if their income is only 10 gold a year, that means he spent 20 years worth of income on the sword manuscript.