AirPod Pro repairabiliy? I believe I recall reading that specialist technicians who first put the Airpod Pro to the test for repairability are reported to have almost broken out in sweat. The end result being a shocking 0/10 score, effectively rendering them unrepairable in a practical world.
Indeed they are extremely well designed but although repairability could have been programmed into the design - especially for relative ease of battery replacement, this was clearly not a priority. The silicone earpieces however are a click fit and easily replaced.
That $270 'repair' reply was carefully worded, as clearly there appears to be no cost effective repair for these as far as I can see. If defective and still under warranty they would have been changed for a brand new pair. If outside warranty and defective they are fit for trash - unless you have a friend who is good with soldering equipment and unlimited time to tear-down, procure replacement spare parts and perform a repair for you free of charge.
Just for info I note that Samsung Galaxy Buds Plus have a cool 7/10 repairability score. In my book this is the best reason to purchase those over AirPod Pro, with many commenting that fit comfort and sound quality is superior with the Samsung - admittedly highly debatable.