Au$900 seems kinda excessive. You can rent a pornstar in LA for US$1000 an hour, and she'd do anything (literally). But US$300 is enough if she's not in movies. Tall, blonde, long hair, long legs, 36D, thin waist, banging booty like a female WWE/playboy bunny diva. Add $50-100 for greek.
But bang for the buck? You can't beat a 141 girl who sucks your asshole for HK$400, bro.