Re: You've been notched!
I just had my iPhone 6 battery replaced (by Apple). I was bracing myself for the awful decision that spending £200 or something to keep the thing alive for another year was still cheaper than £700 for an 8, however bad it made me feel.
It was £25. I don't remember how much decent replacement batteries used to cost when I had phones with replaceable batteries, but I bet it was ... about £25.
So oddly, Apple seem to be not ripping people off for batteries.