I was going to join a Fitness First last year sometime as they had a deal of I think $30/month saving $10/month or something, it's close to $50/month at USYD.
And here I thought I could waste some time between classes at the gym.
Apparently tennis court hire includes pool entry. If that's the case, some of my friends are thinking about hiring a court for an hour of tennis ($2 each with 4 people), and then going for a swim afterwards, which would be cheaper than pool alone.