What ISP do you have @micgrech - some of them do unmetered Steam downloads - see https://code.google.com/p/steam-limiter/ for a list of ISPs that do that and a tool to make Steam download using them.
Hi Matt,
I use Bigpond but only there 3G service. Can't get any form of ADSL to my property, and I only live 20km from Melbourne CBD.........work that one out!
Your seat's obviously not marginal.... vote someone out.
If you lived in the bush you'd have fibre.