Equine Investor,
NSW TAB gives approximates on Quinellas on their web site and WA TAB (ozbet.com.au) also gives Quinella approximates on Supertab pools BUT the update on WA is a bit behind (eg. pool on Tabcorp site will be showing 10000 but pool on WA tab only showing 7000).

Quinellas are certainly the only exotic bet I would consider placing serious bets on because they are the only one where you can get an idea of the return - other exotics are too uncertain. One Trifecta yesterday payed a few hundred on one TAB and over a thousand on another - the true value was probably about $500 so you either got massive unders or massive overs.

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