 Reserve seats on sale now at iowastatefair.org and the Iowa State Fair Ticket Office. Convenience fees apply to all tickets. Don't miss Brett Young Live. At midday, September corn up 5 and 3 quarters at $3.96 and a quarter. August soybeans up 13 and a quarter at $10.91 and a quarter. August soybean meal up $3.90 at $3.37.70. August soybean oil up 58 cents at $0.47 even. On the Merc.