Nope.
It’s impossible to overprice something like a smartphone.
It’s a fiercely competitive business and alternatives to the iPhone start at $100 or so.
Oh those cheap Android phones are not real alternatives? Well, clearly then there is added value in the iPhone.
Ps. iPhone is perfectly usable for half a decade, thanks to excellent software support from Apple. Just get the battery replaced once in a while.
It’s better value than pretty much anything else out there when you consider the longevity, as you should, of course.