I don't pirate anything myself, so I feel where you're coming from as far as trying to keep up.

For MMA, my buds and I usually hit up the local bar and watch the UFC Fights on Saturday nights. It's great, because for less than half the price of a PPV Ticket you get to enjoy the food and company with your friends as well as get out of your wife's hair for a night. The only downside is that the bar is too loud for you to ever really hear the commentators. If you don't have a thing against seeing old fights, UFC's Youtube channel regularly posts free fights.

Unfortunately for boxing, none of my local bars ever show any PPV Fights as they don't draw a big enough crowd to justify the cost of being allowed to show them. However, some of the smaller promotions can be found on standard cable channels like ESPN and FOX Sports. You can also catch replays quite easily as well.

Since wrestling here in the states is mainly for highschool and college age athletes, you often have to go see them live. I don't know what it's like in Australia, but if your local highschool has a wrestling team, go check them out sometime. Those boys can always use one more local in the stand cheering them on.

Finally, if there are boxing/mma gyms around you, pop your head in from time to time. A lot of times they'll be prepping for a small time promotion and you can get a flyer as to see when and where it will be. While the fighters might not be as crisp as the pros, the fights can be just as engaging and enjoyable to watch. Best of all, you'll be supporting your local economy by attending.

Long story short, there's action everywhere. You just gotta look for it.