I mailed mine out yesterday and everyone except the one going to Canada was 65 cents. I took them in and had them all weighed. The one going to Canada was I think $1.17 but I had two pieces of fabric since OK Darla is in two groups with me, worked out great and cost less. The Mail Lady told me that I did not have to fill out a customs form because there was no value assigned to the fabric.
I use a regular envelope pressed fabric wrapped in cling wrap. I have found out the more expensive part can often be the returning block, depending on the number of seams. More seams means more bulk. So this time to save the headache of not knowing I just bought the 6 X 9 manila envelopes and removed the fasteners. The mail lady told me more than likely it will still be 65 cents to mail but being in a larger envelope they will be flatter, and flatter is what we want so it will go through the machine.
Have fun in Australia~