Wagering Calculator How much should you bet on a horse? A superfecta box covering four horses would cost $24, but by keying the #4, the wager would cost just $6. Horses 1, 2 are your first key. the correct order. document.write(''); When using three or more horses in your Exacta Box, any two of your horses must finish first and second. Likewise, that same betting site will offer $0.10 superfectas for races held at tracks that offer the same minimums in person. The payoff is $7 which is the profit ($5) plus the cost of your wager ($2). Each number represents a horse. Here, we will take an in-depth look into superfecta bets, how they work and the different types of superfecta bets you will come across either online or next to the track.