quenix parent
I believe this repair can be done out-of-warranty for free.
Yep, mine were totally out of warranty, I noticed some clicking mostly only when running, and they replaced them in-store for free.
I was worried they would blame my third-party tips (https://www.complyfoam.com/collections/comply-foam-tips-comp...) but as mentioned by the other poster, they remove the tips before testing.
This is in line with my experience, I got both AirPods Pro replaced out of warranty a couple weeks ago, even if only one of them was presenting issues. Apparently, the machine they use to check said both were affected.
I got them replaced in Spain while the original purchase took place in Germany.