CNBC new ` The Cheap Date Index assesses cost of a simple date . Most expensive is Mumbai , where the same night out could cost you $ just $ 23 . The Cheap Date Index has been calculated since 2012 .
Deutsche Bank 's new `` Cheap Date Index '' assesses cost of a simple date . Most expensive is London , where a basic night out could cost you $ 121 . The Cheap Date Index has been calculated since 2012 .