dir-636l N300 $29:
http://www.wireless1.com.au/d-link-dir-636l-wireless-n300-gi…
dir-826l N600 $39:
http://www.wireless1.com.au/d-link-dir-826l-n600-dualband-gi…
The $29 one is half the price of the next cheapest vendor (even without adding delivery):
http://www.staticice.com.au/cgi-bin/search.cgi?q=dir-636l&sp…
…and the $39 is at least $10 better than other vendors (unless you can pick up from Megabuy or Umart in QLD):
http://www.staticice.com.au/cgi-bin/search.cgi?q=dir-826l&sp…
Cheapest I've seen for wireless routers with GB ethernet (handy if you ever want very fast wired networking).
They also have a USB port for sharing one of those big external hard drives between your PCs.
Never heard of wireless1 but apparently they are Google Trusted (google insures purchases from their site) and have a shop in Westfield Parramatta (NSW).
So cheap I just bought one just so my Chromecast can show Netflix from other regions using Getflix.
Nice