We have both spray on and turf for our lawn in Canberra. The spray on
was much better (didn't come with scarab bugs) and was useable in the
same amount of time.

The spray on lawn is lush and grows very well. With the water
restrictions here, we haven't watered it since March and it shows no
signs of stress.

Not sure about the price, I seem to remember it was about half the
cost of the turf, but there was a minimum charge for small areas.

Hope that helps
cal