What is your general house edge for horse racing? I know at racetracks in real life it can be as much as 40%. Curious as I know sportsbooks generally just take the same odds given by the racetracks prerace.
If its pretty high, then I would assume that hitting a 5.60 odds horse or higher would probably be a 1/20 or lower chance proposition...was considering trying your "step-up" promotion (what I call it).
the promo is actually quite generous...