We're with HBF (which is probably only best in WA) and pay around 350/quarter. But that's only intermediate level cover so we don't get full payments on the theatre fees etc.
It's probably worth it if you have to do multiple cycles, though in saying that you'd have to check the fine print to see what limits there are on payments for AC-related claims. Remember you'll have to wait out a 12-month period before you can claim too (so you'll have paid big bucks for a year before you can claim anything - worth considering against cost of IVF without PHI).

Good luck! woudl be nice if you didn't need it after all...