> As I recall, SF, NYC, and Seattle get full wages, and other geos get discounted by a certain percentage. If you live in the US but not in one of those metros, your pay could be ~15% lower.

Seattle is actually in the tier below SF and NYC, which makes its pay around 10% less. However, it's mostly a wash when you consider that Seattle doesn't have state income tax, so your net is roughly the same in both places.