Not into beach detecting Griz, but the one time when I must have been extremely bored I recovered about $2.50 and a lot of bobby pins, xxxx bottle tops and lotsa ring pulls. There are several beaches that you can try, Whiting, Turners, Main, Convent and the northern end of Pippi's, but remember that it doesn't get as packed here as it does on the Gold Coast or Sydney beaches.
Good luck!