Buying books in Australia

There is a good reason not to buy (especially technical) books from Borders.
Unix Power Tools costs AUD 127 on Borders as opposed to AUD 80 on FishPond.

Borders:

FishPond:







Borders, of course, has the overhead of maintaining huge stone shops and a fancier website. But a staggering 58% difference?! I find it hard to fathom how its going to be competetive in the long run.
Amazon does it for USD 47, but the US is a different story altogether; and at the moment, uncomparable. I wonder when will the day arrive in Australia when we can buy books at rates similar to the USA.