Apple requires changing the earspeaker and the display simultaneously?

Hi there,

So I’m about to try and change the earspeaker of my Iphone 8, but after having read the guide on how to do this on this website, and watching videos of people changing the earspeaker, I’m becoming a little bit worried that I might not be able to complete the repair with my level of skill, which is more or less abysmal.

So I checked with various third party repair shops around town, and got a couple of suggestions on how much they charge for changing the earspeaker. The prices varied somewhat, but none were particularly eregious, except the one I got from a repair shop which were authorized by Apple. They charged around 36 dollars for cleaning the earspeaker and phone, but charged a whopping 215 dollars for changing the earspeaker. The reason for why they charged this much, they told me, is that they also had to change the entire display at the same time, thus the cost and installation of the display had to be included in their fee.

I asked them why they had to change the display as well, but they couldn’t give me an answer other than that this is what they do as a repair shop authorized by Apple. So I thought to ask you guys what Apple’s reasoning is for necessitating changing the display as well as the earspeaker? If I took on the authorized shop’s offer, I would get a 3 month warranty on their repair, which seems like too short a warranty to justify the steep price?

Thanks in advance!