Thanks for the advice/comments. But unfortunately I can't access http://www.stc.com.au because I'm not in Australia (the site rejects me automatically) and Dial-A-Bet has a betting minimum of $20 which is a tad too high for me.

I'm not complaining about the range of betting options available, just that all of them seem to be on different sites. It takes me half an hour just to sign in on a Saturday morning!