I might be a little slow, but saw Alpha and some Bridge Rd beers at Dans at Mermaid waters on the coast last week. About $20 a sixer.
In Brisbane, and I'm not from Brisbane, I think Drinx has the best range of what I like to drink. They seem to be mostly out on the eastern side of town.
Fat Yak is available in few spots in Brissie, they're listed on the Matilda Bay site, I don't think it's in bottles yet.