Yes, I believe it is the most expensive phone that i have heard of, It is not a phone you see in the hand of a common or an average person because they are expensive, an iPhone cost as high as $2000 or more, the rich in the society buy them and use them to show class while some get it because of the professor and image quality.
It is very possible that when hundred people on the street are gathered only 1 or none could be using smartphone but when ten or more people are gathered in a government residents area all Of them can be found with one iPhone or more which are usually of latest version , this is an indication that iPhones are the most expensive.
There are some sophisticated apps that are only compatible to iPhone alone because other phone lack the capacity to hold them.