The envelope in the AA auction is white. In the NW auction, it's brown.
Obviously not the same seller.
Actually, if the seller(s?) did realize that the airlines would investigate the auction, they may be experienced ebay-ers who set up a new account with an email address different from the one in the airlines' records.
And folks on ebay do steal one another's descriptions. There may actually be soneone in Toledo who saw the AA auction, decided it was a good idea, and copied the AA verbiage since the hits & bids were so high.