The selling point seems to be that the beef is restaurant-quality with a "wagyu grade of six plus marble score." Marbling is the amount of intramuscular fat you find in meat (usually red meat). You can see how much marbling that means here. The chain is claiming that the beef costs about $100 AUS per kilogram (about 2.2 pounds).
The Wagyu 3 Ways features strips of wagyu rib fillet, air-dried wagyu bresaola, and sliced wagyu sausage. It also comes topped with smoked rasher bacon (i.e. back bacon), ground beef, and a tomato capsicum (bell pepper) sauce.
The Wagyu & Truffle Hollandaise features a truffle-infused hollandaise drizzled over wagyu rib fillet, camembert cheese slices, cherry tomatoes, and sliced red onions.
Pizza prices in Australia are fairly comparable to US prices (pizza prices start at $4.95 at the low end), so it'd cost close to the same if they made one over here. If you were to travel to Australia, with the current exchange rate, it would be about $44.59 to get the Wagyu Duet.