Why spend 50€ for Fairphone to install e/OS for you?

I have a Google Pixel 5 that I installed e/OS myself on, but I dropped it a few days ago and the touch sensor is broken in such annoying locations that I feel the need for a new phone. So, trying to be more environmentally conscious, I wanted to try a fairphone for better repairability. I know they have been offering a version with e/OS pre-installed, but I only learned today that it is 50€ more expensive.

Do any of you guys know what the benefit of letting them do it is? I guess there technically is a risk I mess it up and brick my brand new phone, but I think the risk is so small that I am willing to take it.