Thanks. That's what I needed to know.
Since sever asked about the case...
I sold an item that was used with a damaged part. It is a large, heavy item that cost a lot to ship. Described the damage and posted detailed pics in the listing. I know the part that was damaged could be replaced but I didn't know whether it could be repaired and told they buyer that before he bid. They are upset because it cannot be repaired so that have to replace the part. Even though I don't believe it is owed since it was in the listing, I offered a refund less shipping to make the buyer happy. They are threatening a SNAD claim.
I know many of these go to the buyer so I just wanted to be prepared, know what the worst case scenario is, and get everything ready in case.