As a seller. Wouldn't you check to see if one is already listed first?. I don't see the point in competing with another Gorgar on the market, even though they are states apart.
I think it can actually work in favour of the one in W.A. . The QLD one finishes first and if people get into a bidding war but miss out they can get another chance at the W.A. one . Seems to happen a lot on ebay . You see a pin listed that you haven't seen for sale for a while then all of a sudden there's a few of them popping up .