I know there originally only $5 but I bought some a couple of weeks ago and they have pretty good sound quality for there price also there not the best looking earphones out there but hey there cheap
TDK in-Ear Headphones Blue EB400 $5 (Save $15) at DSE.
$21 at JB http://www.jbhifionline.com.au/ipod-mp3-portables/headphones/tdk-eb-400-in-ear-headphones-blue/517008