Hey Bgahwan
That could be the basis of a NEW system.
Syd Races only
Max 4 horses in the
race / bet the 1st horse that shows $5.

Only show up about 4 times a year but would be marketed by a well known commercial system seller.I can see the blurb now.
"bank $300 betting 3 % profit $189,000

Cheers.
darky