And have a go at how many X trades and centre point trades are going through. Here's an extract from 2 minutes ago. The big volumes belong to the big boys (at prices us mere mortals cannot transact at).
Trade Depth
Trades Quantity Price 1 7 269,700 0.497 2 3 22,476 0.500 3 2 180,000 0.497 4 1 5,238 0.500 5 1 10,000 0.495 6 1 5,238 0.500 7 9 98,700 0.495 8 3 265,300 0.497