Yeah Fastway is pretty good. And can be cheap, more so if your a regular user. But they have gone up in price a little with their across state and interstate servicing - something, like, about $13-$14 for about 5kg. I think thats about right, at work we don't really use them for the across state and interstate stuff any more cause of it.
http://fastway.com.au
For a "Price and Service Calculator"