This post contains affiliate links. OzBargain might earn commissions when you click through and make purchases. Please see this page for more information.
Quickly ducked into Big W Altona Meadows and found the amiibo reader for the 3DS for $5, which usually goes for $20-$30. Forgot to take a pic as I was in a rush (hence the URL in the OP), but it is located within the glass cabinet in the games section.
The reader is only needed for older 3DS models (basically all models without the "New" prefix) as it was not built-in at the time of release.
Great find OP.