Thought this snippet of news from GPSOz might be of interest:
Hema Maps Ã‚â€“ will be releasing shortly a composite CD covering all their existing Australian CD titles. At this stage the actual CD is not available but we have persuaded HEMA to allow us to sell at a special price of $249, the full set of current CDÃ‚â€™s. To this we have added our own DVD which also includes a 1:250K topographical map of Australia and a 1:1M touring map and all the maps suitable for OziExplorer. See http://www.gpsoz.com.au/mapping_products.htm
for more details.