Maybe it's changed since I lived there, but I don't really think Seattle is "one of the highest cost of living cities in the world". It is (or was) quite a bit cheaper than NYC or SF, for example.
https://www.nerdwallet.com/cost-of-living-calculator/compare...
And depending on how you break this list down (Exclude Bermuda from North American cities,bundle Bellevue/Seattle, Brooklyn NYC) it's in the top 10
https://www.numbeo.com/cost-of-living/region_rankings.jsp?ti...