Keep trying to get tickets, I got tickets to the concert in October just a week before it and at a better price than what I paid for one of the shows in May.
Are the tickets being sold by Ticketmaster in Australia like they were in the US?
If they are keep checking as the concert gets closer and more tickets will become available.
Did you know that U2 is playing a concert in Portland, Oregon tonight?
It is their last concert in the US before they finally get a break for a few weeks.

Yes, those are my photos.
It was so amazing being so close to Edge and Bono.
They are really so nice to their fans, you should try to meet them when they come down your way.