Estimate of how much you'll need to retire in a big city

From Melanie Pinola on Lifehacker

what if you want to stay in the big city? SmartAsset calculated how much you should have in savings for the most and least affordable cities in the U.S.

https://lifehacker.com/how-much-youll-need-in-retirement-to-live-in-the-most-e-1736267509