The coalition want a 10 year cost benefit analysis for the NBN. Easy:
Current plan:
http://www.internode.on.net/residential/broadband/adsl/fast/
Home Fast2 50 ADSL2 24Mb/s down (9Mb/s at my distance from exchange) 1Mb/s up (0.8Mb/s at my distance from exchange) 50Gb Quota - $79.95 per month
Future plan:
http://www.internode.on.net/residential/broadband/fibre_to_the_home/nbn_plans/
NBNP1-Entry-60 Fibre 25Mb/s down 2Mb/s up 60Gb Quota - $49.95 per month
Saving per month - $30
Saving over 10 years - $3600
Initial outlay per household (http://en.wikipedia.org/wiki/National_Broadband_Network) - $3150
Cost benefit over 10 years (assuming no other tangible benefit!) - $450
The saving per month works out at roughly the same for other plans.