I think you'll find flights going out of Goldy may well be cheaper. Rent your house out for 2 weeks and take the family for a holiday.
Considering that is where Mads and I both live return flights back in to GC will likely be very expensive during the games.
Also I live here. I'm going to go to some events. They are well priced. Just because you're jaded old khunts doesn't mean others can't enjoy things.
Seriously, the Melbourne games were a fizzle. Netball is the only sport where the top athletes compete.