We're a competitive site, the rules even say to list all IVs of your pokes as a rule of operating a thread. Few here, if any, care about events or pokes that are not flawless. That point is mute - in the end, the pokes were free if he gave them to you.
and regardless, offering proof is that bad or is it just because there is none to offer? It's not an unreasonable demand for him to ask that. Pokemon doesn't deal with monetary value and the store owner profits from a sale - pokefan was not. He was simply being nice and wanted proof before giving them to you. If it's a serebii competition or wherever, then there should be proof to give, either via IRC, forum (where this kind of thing is usually held), or official email.
I really don't want to get into this anymore since it's not my problem. Feel free to comment on what I said or don't, but I won't reply back on this topic.