Buying DSLR camera on eBay?

Is it worth buying DSLR camera on eBay? I'm just can't quite afford full retail price.
http://stores.ebay.com.au/QD-Shopping-Centre/Nikon-/_i.html?_fsub=3206096011&_sid=138021041&_trksid=p4634.c0.m322
>>> Buying DSLR camera on eBay?