I was in the same boat before we went away on our trip at the beginning of the month. Tire rack supplied two tyres delivered to Yass for about $830.00. Ordered Monday and arrived the following Wednesday week. Cant argue with the service but don't much like their freight prices. Got to wonder why the distributer cant get their act together though.
As a matter of interest we crossed the Simpson via the Rig Road and up to Batton Hill via the Hay river. Only had one puncture which we were able to plug. This is my third set of GGs and I think they are as good as any of the other tyres available in the standard size.
Regards,
Tote

