Just found this very nice blog about Milano (in Italian): www.02blog.it (02 is the local phone prefix).

One of the most impressive news I found is this: Milano is the 11th most expensive city in the World.

Last year Milano was at the 13th position. The most expensive city is Moscow while the only city in the top 50 from Oceania is Sidney, 21st.

The list of the top 50 is available on Mercer site: Top 50 most expensive cities in the World