You need to drop in to Australian Knitting Mills shop in Hood St Collingwood, basically it's Hoddle St, opposite the old town hall. Junky looking shop, sometimes closed, owner can be a bit stroppy too, but they have the best socks. Heavy, 90% wool from memory, about $8, also have merino. I keep going back and they are the only socks I have worn for about 15 years. They have all sorts of other stuff too, from hats to oilskins to thermal wear. Mail order if you need it, and they used to be at the country shows but might have given it away. Yep, buy Aussie made, Aussie wool.