Mystic,
I have to agree with the answers so far, one other intersting thing i find is after selecting the race i then like to check the "tipsters on the TAB" and if my selections match thier 3 selections ( i pick 4-5 for the tri ) i like to bring the bet in tighter with more units, if i have 2 matches i take it out a bit wider and 1 or less wider still
ex
3 match = MU-2/3/4 = 3 units
2 match = MU-3/4/5 = 2 units
1 or less = MU-4/5/5 = 1 unit

you could use any combo's you like.
my reasoning for this and i could be wrong is
that i have generally found most people follow the TAB tips and if it comes home the payout is smaller thus more units and so on.

Just an idea im playing with but its holding pretty true so far.

as with seeker11's thoughts im the same i now work on places mainly and have this as the main bread n butter and just play on the side with the tri's if they come home its a bonus.

also listed is a chart for pricing the exotics

r
pete


Quinella
STANDARD QUINELLA . = $ 1
BOX QUINELLA . = # / 2 * ( # -1 ) * UNITS = $
BANKER QUINELLA . = # ( 2ND SELECTIONS ) * UNITS = $
Trifecta
STANDARD TRIFECTA . = $ 1
BOX TRIFECTA . = # * ( # -1 ) * ( # - 2 ) * UNITS = $
MULTIPLE TRIFECTA . = (# 1ST SEL) * ( # 2ND SEL -1) * (# 3RD SEL - 2) * UNITS = $
BANKER TRIFECTA . = # 2ND SEL * ( # 2ND SEL - 1 ) * UNITS = $
ROVING BANKER TRIFECTA . = # 2ND SEL * ( # 2ND SEL-1 ) * 3 * UNITS = $
First 4
STANDARD FIRST 4 . = $ 1
BOX FIRST 4 . = # * ( # -1 ) * ( # - 2 ) * ( # - 3 ) * UNITS = $
BANKER FIRST 4 . = # 2ND SEL * ( # 2ND SEL -1 ) * ( # 2ND SEL - 2 )* UNITS = $
MULTIPLE FIRST 4 . = (# 1ST SEL) * ( # 2ND SEL -1) * (# 3RD SEL - 2) * (# 4TH SEL -3) * UNITS = $