The purse is calculated as such:

((Average value of all non-infantry units) / 2) * (Arena Modifier) = Monies!

Arena Modifier: Off-Circuit = 1 Minor = 1.5 Major = 2

Winner recieves 100% of purse value minus 2nd and 3rd place.

Runner up recieves 20% of purse value.

Next in line recieves 10% of purse value.

Anyone after this recieve nothing but the shame of their horrific loss.