I've been waiting for this for a while - COTD finally has vegan protein powder amongst its many whey protein powder deals! It's a very reasonable price, $19.95 for 3x 300g, +$9.95 shipping. I bought two lots of 3 tubs.
It's $24.99 for 1x 300g at Woolworths. The cheapest non-dairy protein powder I've ever seen was about $11 per 350 g for some clearance Musashi soy protein powder at Woolworths several years ago.
If you're into muscle building and averse to dairy, this is about the cheapest you're likely to get protein powder. It's even cheaper than sites like BulkNutrients, including respective shipping costs.
COTD charges a flat $9.95 for shipping to most of Australia. You can offset this by adding some other items to your cart. The creatine is reasonable, though still slightly more expensive per kg than Ebay. There are a few other ok buys in the groceries section but nothing particularly worth writing about.
As previously posted on Ozbargain, you can also get $10 off COTD by installing the iOS Yumtable App, effectively negating shipping.
My referral link is https://www.catchoftheday.com.au/register?ref=xfsk452v for which we'll both receive $10 credit after your first purchase, for new accounts.
animal protein is superior to plant protein