Thanks for the information. I received one other message privately that this person's name is not real, that they have several aliases, and that they are trouble.
It gets even better. I received two messages from this person last night:
"You must be a very unhappy person,I asked a favor.Friendship comes first.If you cancel the sale would not harm you.You do not lose anything.But you were arrogant.You saw my qualifications?What will you gain from this?I try to make friends with everyone.I'm 70 years oldIf you were injured I would assume buyingI warned you I was wrong but the impossibility of actually purchasing.My regards and God Bless".
And then, a few hours later:
"Put the name of my father in the forum HPMuseum shows the stupid person that is you,We would pay for the purchase of my father, a man of 70 years.But after this exposure of my father's name we will take appropriate action.Or you delete this post and you'll see what happensHave you ever fired at my father for not paying Ebays what you want more?You are a person who must have suffered much.I feel sorry for you."
I'll block them from future interference in my auctions, and report them to ebay for impersonating someone else. My personal recommendation to anyone selling on ebay is to put them on their blocked bidders list before they mess up an auction.