Not sure what you're getting at. Housing is the main cost, and is drastically cheaper in Seattle. Food in Seattle is a bit more pricey.
Housing is just one component, there is a lot of other stuff that has equal price: if you order stuff from Amazon the price is the same, if you buy a new car the price is the same.
Housing is just one component, there is a lot of other stuff that has equal price: if you order stuff from Amazon the price is the same, if you buy a new car the price is the same.