Just wondering, if you are in Sydney, why you wouldn't buy locally ? There are perfectly well equipped and longstanding stores in your own backyard, who are most knowledgeable and a pleasure to deal with. They even offer free or cheap shipping.
http://www.absolutehomebrew.com.au/ (free shipping over $120)
https://daveshomebrew.com.au/ (free shipping over $120)
And in one of the above examples, the web prices are nothing like the real prices if you go there yourself. Last time I went to Nth Sydney a couple of weeks back, I probably got 25% knocked off the overall price, something that happens for most customers.
I'll tell you why I don't bother with buying locally.
I basically buy 1 brews worth of ingredients at a time, so my last order from Craftbrewer was $37.41 plus $16.85 freight = $54.26
If I place that order with Absolute Homebrew it costs $47.55 + $9.50 freight = $57.05
I don't know about most folk, but St Marys is a bit of a bloody hike from my place and I can only get there on a Saturday, when I would rather be doing anything else than wasting 2hrs driving there and back.
I don't bother with Daves because I find his range to be fairly limited and I can't seem to get rid of the memory of my first trip there (before I started all-grain) when the young guy there sold me an unrefridgerated 12g pack of crusty old lifeless finishing hops that would make my beer taste "amazing". Also, Daves not only more expensive than Absolute ($30 for 5kg of MO? WTF??), but you can't buy on a "per gram" basis and I don't find the website particularly easy to navigate.
Craftbrewer = great prices and prompt service. Ross has been really helpful both via email and phone on a number of occaisions
If I want overpriced finishing hops and grain in 1kg non-vacuum bags, I'll just go to a Country Brewer instead.
Edit: I should probably say that
IF I was independantly wealthy and
IF I had no workday obligations, then yes, I would likely schmooze with the owners of the 2 major Sydney stores and buy in bulk etc etc.
Until I win lotto however, I will order a little at a time and make my small savings by buying through Craftbrewer, or sometimes, Grain & Grape.