Jobs.net.au is one of the top 5 .net.au names, in the same league as cars.net.au, hotels.net.au etc, its one of the few .net.au that would actually have some small volume of type ins, but still around 1000 times less type in traffic than jobs.com.au.
If the best .net.au names cant even get $5k, it shows all the lower quality .net.au names are close to worthless in terms of resale, once you get into the 2 or 3 worders, hypens, numbers, they are wothless.
If anything it shows the weakness of the .net.au market, $4500 for one of the best .net.au names, the same money in .com.au buys you a run of the mill geo name.