You can't hunt saltwater crocodiles in Australia yet as they are still protected.

As for water buffalo hunt prices they vary in price. A cull hunt or non-trophy hunt is cheaper but usually you can expect to pay around US$6500 to US$9000 for a 5 to 7 day hunt including daily rates and one water buffalo trophy fee.

Arnhemland is the best place to hunt trophy water buffalo. You may get a chance at some pigs as well but they are not as numerous there as elsewhere. Fishing plus maybe some waterfowl (in season).

A station hunt for water buffalo might be cheaper and more pigs but buffalo probably won't be as common and less choice for the right trophy.

Contact some of the outfitters to get price quotations.

I have hunted with both Graham Williams of Australian Buffalo Hunters and Matt Graham of Hunt Australia and they are worth contacting for water buffalo. Both are members here as well.

The Dry season is the time to hunt around June to October/November. September starts to heat up and October is hotter, November more. December onwards the WET starts and hunting is generally over.

Banteng bull is another species to hunt and will be a specialised hunt on the Coburg Peninsula in the NT.

Scrub bull (feral cattle) are another trophy well worth hunting.

Alan Moon (4seventy) whom posted above does both scrub bull and wild boar hunts in Far North Queensland at attractive prices. A double rifle nut too.

His doorstep is the Great Barrier Reef and would also make a nice family holiday location too, before or after the hunt.

Other game - feral horses, donkeys, camel, goats, pigs, various deer species such as sambar, chital, rusa, red, fallow, hog deer, rabbits, hares, foxes, ducks etc etc are available in various places and various times of the year in Australia.

It depends on what you want to do.