To my understanding, owners are acutely aware of what the win payout is and choose their races by the win payout (unless they are not shooting to win). Therefore, they don\'t really look at races based on what the announced purse is but rather as what the winner gets. This is very tricky track to track. For example, at Turfway, for the NW1X allowances, the purse is $22k. However, a significant fraction of that purse is only for Kentucky-breds (like half), so it is really only an $11k allowance race for all the non-kentucky-breds. This phenomenon exists in other states. Also, the way each state handles state bred bonuses is different -- for example, in NY most of the state bred money goes to state bred restricted races. At PHA, there are almost no state bred races, but there is a very rich bonus for PA breds that hit the board in open races (like 40% on top of the stated purse). Long story short, the payout down to last is not the only thing from state to state that affects what winners get and I think most owners do the math and look at what they would get if they win and compare that with their alternatives. That is my two cents for what it is worth, hope it helps.