Sign convention (operator cash impact):
+ve = we gain · −ve = we lose.
POC & GST are a credit (+) when the punter wins (tax returned)
and a charge (−) when the punter loses.
Racing/sport & bank fees are always a cost. NGR = GGR + POC + GST + Product Fee + Bank Fee.
Product Fee — Body Detail
Product Fee — By Leg (each leg billed on its own body's rate, over turnover ÷ legs)