"Thanks, how do you identify drop shippers? "

As a general comment ,  one thing  common to them is  that they use images copied from other sites.

In your case, the sellers are registered in China. It's shown on their Feedback and About pages

They use dropshipping warehouses in Australia and that's why the location and postage is  in Australia.

Open the dispute and don't listen to any nonsense from the seller.

The seller will have to supply you with a return label for tracked postage.

You can ask eBay to step in after 3 days if necessary.