I can't substantively comment on this without violating HIPAA, but I can add my agreement in advice to stay away from this person.
If not for the photos, I'd suspect that we or maybe Charlie in particular, considering the location, is being baited by this auction. Larry Jaster lived in Canada years ago, and his writing style did not match the repost in this thread: Larry rambled semi-coherently in endless paragraphs; he never wrote in single lines, misapplied or omitted articles, or misconjugated verbs like the person who wrote that. I suspect whoever wrote that is trying to impersonate someone with poor or non-native English grammar.
David, who is a very kind person and who, as far as I know, is fine, would be mortified by the writer of that email gossiping about him. I don't think Charles could have conveyed what happened without reposting it, and the nature of the seller indeed needs to be known among us, but please don't let this ignite rumors about David.