Under s.30 of the Indian Contract Act 1872, agreements by way of wager are void. Which of the following is NOT rendered void by s.30?

Section 30 of the Indian Contract Act declares that agreements by way of wager are void, and no suit lies to recover anything alleged to be won on a wager or entrusted to abide by the result of a game or other event. The section adds an exception: it does not render unlawful a subscription or contribution, or an agreement to subscribe or contribute, for any plate, prize or sum of money of the value of five hundred rupees or upwards, to be awarded to the winner or winners of a horse race. Bets on cards, cricket and similar events are classic wagers, and an agreement to pay only the difference in price where no delivery of goods is intended is a wagering transaction. Only the horse-race prize subscription escapes the bar in s.30.