The average payout for winning bets on the Preakness Stakes varies depending on the type of bet placed and the odds of the winning horse. For example, a $2 win bet on a horse with 5-1 odds would result in a payout of $12. Similarly, a $2 exacta bet on the first and second place horses in the correct order could result in a payout of several hundred dollars or more, depending on the odds. Ultimately, the payout for winning bets on the Preakness Stakes is influenced by a number of factors and can be difficult to predict with certainty.