Abundant Earth Products - I am able to buy these at my local Coles. Otherwise you can purchase online, here is one link I found to purchase them online http://www.glutenfreeshop.com.au/Abundant-Earth-Puffed-Rice-P991.aspx 170g for $4.15. Shipping fee is calculated at the end. I'm sure there are other online stores that sell these as well, this is just the first one that stood out to me.
Goaties - These are marketed as an ideal health treat for the whole family, a yummy milk shake tasting treat that's fun to eat. I also get these from my local Coles and they are available from some health food shops. I give them to my kids as a treat, not the whole packet 10.5g worth, just one or two which they enjoy as a sweet treat. They are available in chocolate and strawberry. The last packet I bought was from a health food shop and they were $1.60.
Here is a link for more info on Goaties http://interclinical.com.au/goaties/main.html
You can also order them online here http://www.interclinical.com.au/products.php?cat=hphp&page=2 just click on the picture and that adds them to your cart, just not sure on the postage costs, but they are $1.60 a packet.
Hope this info helps.
Nicole