Yes, based on data reported by statista, starting from 2010 until now the gap between the price of the iPhone with Android phones increasingly distant. Though spec Android phones tend to be more advanced. In 2010, for example, the average price difference between Android to the iPhone for USD 261. Then in 2011, the difference ballooned to $ 330. also, you can read this info at slip ring connector.
Average price difference of Android phones with the iPhone even more enlarged in 2013 to reach USD 374. This is what makes Apple continues to lead about the amount of profit in the mobile phone industry.
Here is the data the average price difference with the iPhone is assembled statista phones based on data from IDC.