Consider iiNet, Australia's third largest ISP:
http://www.iinet.net.au/broadband/plans.html
200GB/month ADSL2+ for $50/month (+$30/month "phone tax"). In NY I have Time Warner Cable 50Mbps but it's basically capped at 250GB and I think I pay $80/month for it.
But there are three important advantages Australia has in this regard:
1. The caps are known and advertised. In the US they are far more surreptitious;
2. You get what you pay for. If you pay for 200GB, you get 200GB. There is no hiding behind "fair use" or nebulous definitions of "unlimited". This also means that a low traffic user can pay as little as $30/month for their ADSL2+ connection. Nor do you get labelled a bandwidth hogged and get transferred to some incredibly oversubscribed network if you dare to download (common practice in the UK); and
3. If you wish, you can pay for and get 1TB+/month. Where I am, my only choices are TWC and crappy ADSL1 providers. If I wanted >250GB/month I couldn't get it.
And all this is the current system. Australia is in the early stages of rolling out FTTH (fibre to the home) for ~95% of the population with structural separation between providing wholesale and retail services.
So I wouldn't be too quick to crow about Internet advantages in the US over Australia (or anywhere really).