Pete this is from the nrlsupercoachtalk FAQ page:
"What’s the magic number?
The magic number is the value that Vapormedia uses to calculate player prices each week. Like a players break even, the value changes subtly throughout a season depending on player performances, and as such, needs to be recalculated each week. Thankfully, it’s a relatively simple formula, and it goes a bit like this –
The Magic Number Calculator
Break Even + Last two scores divided by 3.
Then Price divided by number above = MN
Thanks to SCTalk regular Dragonbill for explaining it so well.
With this number you can predict potential price rises and plan more effectively and further ahead, which is always useful for those sorts who like to obsess over what their trade plans should be in the future."