Here's an idea from out-of-the-box.
Quite simply, would funding the fitting and installation of these devices SAVE money on SAR costs?
i.e. What amount of money could have been saved in SAR operations if the exact location or (within last 5-10 min location) was known?
Would the installation into every seaworthy boat and aircraft Australia-wide, plus a purchase of a large "block" of location packets from the LEO satellite providers pay for itself?