what battery?

Kmart have the dearest prices for Exide - $205 for the Extreme.
Supercheap have the Bosch version of the Century battery for about $200 as well.

They both put the price up to the max, so people will think they're getting a bargain at their 20% off sales.

Very interesting. Where are you finding them cheaper?

Last two Exide extreme N70 cost me $135 each, from Adelaide Truck and 4wd, but that was 18 months ago - Kmart at the same time was about $170.

Sprint auto parts in Adelaide had them advertised recently for about $170. Worth doing some phoning around on batteries. I've become a bit cynical of the prices at the "discount" stores.