I meant Seoul. I think San Francisco isn't a great yardstick for rent. Average salary of software engineers in Seoul is $45k, in SF $135k (according to Glassdoor).

I can rent a studio in Seoul for a little over half the price in Seattle. The salaries trend higher if you work as a software engineer for one of the newer companies. Korea also has unique offerings opposed to the usual monthly rent: https://en.wikipedia.org/wiki/Jeonse