The latter operates as a monopoly[102]. The primary judge found that TAB's average commission from its off-course totalizator "is about 16% of the quantum of all bets placed."[103] However, some 66 per cent of its commission was said, as at August 2007, to have been accounted for in costs under the RDA, taxes and levies.
5. A betting exchange facilitates customers betting on whether a future event such as a horse winning a race will or will not occur. In essence, as the primary judge observed[104], a betting exchange allows punters to bet with each other on a fixed price basis. It matches a bet that an event will occur (eg the horse winning) with a bet that it will not (eg the horse losing). Although Betfair is the counter-party to each bet placed by a punter, it will only take a bet if it is able to match it with an opposing bet[105]. A betting exchange operator has been described as an intermediary where the risk is carried by the customers[106]. Betfair generally charges commission only on the net winnings of a customer. However, it may charge additional fees in some instances. Its rate of commission is between two and five per cent[107]. Its average commission has increased from around 3.2 per cent to 3.5 per cent with the growth of its customer base. Its licence from the Tasmanian Gaming Commission currently limits the commission it can charge to a maximum of five per cent of net winnings[108].