Belly,
We buy most veges at weekend markets, but my wife tells me it is particularly hard to find Aussie grown Garlic at supermarkets.

As a small aside, is Garlic hard to grow or is it not profitable for growers? It seems to come from China.

I get angry at seeing all imported stuff when we grow it here. You cannot buy Aussie tinned ham now and Aussie tinned fruit is getting more difficult. I think Aussie tinned Tuna went ages ago. Now they are labeling stuff 'made from Aussie and imported'

We just do not buy imported fish or seafood.

Never had much luck in growing it Banjo.
Will not try here, black clay soil and too much winter water.
It needs to be dry ,last few years may have seen less try.
I haunt weekend farmers markets, this weekend is locally grown.
So will watch for it , use a lot in cooking ginger too but grow that myself.
A day will come, in my view, we will grow to a plan, some crops reserved for poorer country's ,who could grow enought to feed the world, garlic I mean.
Not a problem for me, just a step to a better life for some.
My fears are not about imports but imported disease.