From what I gather and have read up on, Dutch Betting is for track and/or fixed odds in the real sense of a Dutch Calc.

While on the subject of Late Money Plunges, I often wondered how the TAB figures the payout when less than what one assumes at the time of placing their bet.

Let's say it was showing 8.00 Win.
Bet On.

Then let's say hypotheticaly there were no other bets on that race.
And the Win Pool was whatever it is , 50k for example.

You would still get 8.00 payed if it wins @ 50K Win Pool ?

The other scenario, let's say the Win Pool increases to 80K, bets are On that same runner, so 30K went on that runner which was paying 8.00 @ 50K Win Pool but now showing to pay 6.50 but the Win Pool increased.

Why then can't the TAB pay the price on the 50K pool when I put my bet on, and for the others who bet the last 30K get the 6.50 Div. instead ?

Because they contributed 30K collectively on that runner *after* my bet of a WinPool which showed 50K for 8.00 Div.

It should be paid accordingly but somehow if there is a late plunge, we all seem cop the shorter price.

How does the TAB figure this out ? What's the math the do to pay less if your runner was showing 8.00 but paid 6.50 or whatever ?