RGMER4 Garage Door Remote
Merlin Garage Door Remotes
This is what is referred to as the Bear Claw or the Paw Merlin Garage Door Remotes. Make sure you distinguish this from the Merlin+ 2.0
They are easily programmed to your garage door motor (instructions included).
They transmit on 433mhz and use the rolling code method.
Postage via Australia Post regular mail service is free, but un-trackable and can be slow outside of capital cities. You can upgrade to Express post for $11.00 during Checkout if you wish.