If you've seen this headline — "Geneva Is the Most Expensive City in the World for Dining Prices" — it's probably based on the recently released Club Sandwich Index, or CSI, compiled by Hotels.com.
The index, which can be found at www.lat.ms/1KpEtap, compares the price of a conventional club sandwich in 28 major cities. Among other tidbits, it tells you that the average price of one worldwide is $16.43. Some cities are way above average (Geneva at $30.50) and others way below (Mexico City at $9.77).
The complete data compilation also includes prices of a burger meal, a cup of coffee and a glass of house wine, summed up for a total daily expenditure.