Are you referring to real estate prices or something else?

If you compare apartments by the square meter price, I think you will find Belgrano less expensive than Palermo. There are many individual homes in Belgrano, and they are also less expensive by the meter than the few casas to be found in Palermo.

Check out the listings for Belgrano and Nunez and compare them with Palermo. Here is the site I used to find my PH:

http://www.enbuenosaires.com/propiedades.html