I caught DOND here in Melbourne a couple of nights ago. It is very different from the UK version. Here are some points I remember;

1. 26 different money amounts in briefcases, not boxes.
2. Lowest prize is 50 Cents (about 22 pence)
3. Top prize is 100,000 Aussie Dollars (about 93,000 pounds)
4. Proper contestants, not models like in the US.
5. Show is only 30 minutes long.
6. No banker or telephone, offers from 'Bank' just flash up very fast.
7. The prize in one of the boxes is a car, the car is on the stage through the whole show.
8. From 6 boxes left, offers after each box, after each 2 boxes before that.
9. Offers much closer to the average than in the UK, mainly 80% or more.
10. Each contestant upon opening their suitcase is allowed to guess the sum inside, if they get it correct they win 500 Aussie Dollars for themself.
11. The show is on prime-time early evening TV, not afternoon.
12. Errr, thats all I remember for now.

PS The UK version is much better.