This benchmixer is usually between $400-$500, and the cheapest price elsewhere is $379 Shipped at Harvey Norman (who often have very good pricing on KMix). So $255 is definitely a steal, let along $229.50 with AMEX/NAB.
We have a few KMix items at home, and their quality is the best. I have a friend who was a baker, and he swears by Kenwood mixers.
Good deal, way overpriced in Oz compared to EU.