I, too, deal with the same guidelines that you do. I have also had the same experience you have had with items being sold out from under you. I called out one of the sellers because my time stamp in his ad was hours before the guy that he sold to. His response was that he mixed up the PM's and responded/sold to the second guy by mistake. He could have made it right, but chose not to. I have a few people on a list that I won't deal with here. It's your best option with things like this.
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