Doodles-40 Said:
"[...]I checked on the Apple check coverage site and they came up as registered but no purchase history. That’s fine as long as they are the authentic ones. Doesn’t bother me too much that they were bought by a third party"
-------
Go Here: AirPods - Check Your Service and Support Coverage - Apple Support
Checking Coverage On Apple Devices:
Next time you plan to purchase an Apple Device off-hand, from a Third-Party, use the link I provided above. That way you can be more certain that the Serial Number Officially Pertains to the Device you are Purchasing and that it is not already registered.
As for Obtaining new Devices:...
So, if available, request and have the prior owner unregister them from their account. If that is not an option, then why purchase them? AY