My Month-Long Trip to Australia

I went to australia for around month with 4 main travel days This would be the price for two people give or take. ($5000 per person is my guess) Honesty i think i went a bit wild here but i was thinking how many times do you get to go to australia in your life I could have saved $1000 or more if i stayed at hostels instead of airbnb but I really wanted to rent a camper van to drive down and see the penguins and coast on my way to Brisbane . . . . . .