I see no other reason to refund your payment other than the seller is telling the truth as obviously the price it sold for is not an issue.

Of course you have other options,  you could give the seller the benefit of the doubt and leave no FB at all.

I do hope you think about leaving feedback before hitting the red dot,  it could be quite possible the death in their family was not sudden, I was called away from home for several days due to a terminally ill relative, the last thing I thought about was ebay.  I was able to return home for one day before traveling back to tend to funeral arrangements, and did not even turn on my PC, I had other things on my mind,  in all I was also missing for nearly 2 weeks, 😞