The Friday File: The costliest retail location in the world is 5^th Avenue in NYC between 49^th and 60^th Streets; the rent is $3,500/square foot/year. Next comes Causeway Bay in Hong Kong at $2,399, the Champs Elysees in Paris at $1,372, and New Bond Street in London at $1,321. Among the 15 costliest locations only one is in North America! Black Friday aside, we need to raise our shopping game.