Oh, I thought it was middle of the range like Internode. The equivalent of Xs4all in Australia would be Telstra who's ADSL services start at 1.5M with 2gb (upload/download) for $39.95; additional usage charged at 15¢/MB and capped at an excess of $300.
That's pretty bad. Bandwidth caps and charges create a different mindset that hurts many providers like Dropbox. If i transfer a large file i only think about how long it will take, not how much it would cost. Unfortunately bandwidth caps are often due to a lack of competition between ISPs.
Which is exactly how it is in many parts of Canada. I can choose between cable and DSL, and both have bandwidth caps. While mine is a fairly generous 100 GB/month (good enough for me), I still keep a watch over my current totals, so I stay a little bit paranoid.
