EWWWW I see this ending badly.
That said, I agree that 4mo is extreme, Also, someone who has my HARD EARNED $$$ should at least give me the courtesy of returning my E-mails. This transaction would get a person banned from Ebay. It's unfortunate that this person is disabled, but it's no excuse for poor business practices. I build "puters as a sideline & one of my suppliers is a one man show ,& he's in a wheelchair. He's NEVER missed a deadline without a reasonable explanaton. He even shipped one part on his way to the hospital for a surgery! Everyone goes thru tough times ,& gets behind, but when that happens one NEEDS to explain it to anyone involved.
Just my 2 cents.