I checked the links on Falcon's post above and if those price figures hold after the ResQLink is authorized for release by FCC, I'll be all over it.

Edit: Due to the Would you attempt to walk to safety? scenario, I moved the FF 210 from my flight bag to my truck's GHB. The GHB is always in the truck so it's a good place for the PLB. It can easily be moved back to the flight bag before a flight, if I don't replace it with a ResQLink first.