I've never bought used ones before, but I did buy a replacement set of iPod earphones from eBay, brand new. When they arrived, not only were they a fake, cheap knockoff, but they broke within 10 min of opening the package
Honestly, the best pair of earphones (and I've tried MANY, because I'm very rough on my gear and go through headphones on a monthly basis) were under $20 and came from Wal-Mart- they're those steel noise-reduction earbuds, and they had identical sound quality to the original iPod earphones WITH the added bonus of fitting in the ear better and blocking outside sounds. I've had them for about two months now and they haven't broken, which is a record for me. I don't know if there are Wal-Marts in Australia, though?
