Has an AFL game ever ended 30-29?
It has. 30-29 has been a AFL final 2 times in 16,622 games. The first was Sydney beat Fitzroy on August 7, 1897; the latest was Geelong beat Carlton on May 28, 1898.
That makes 30-29 the 2421st most common final score out of 6,607 that have ever occurred in AFL. One point away, 31-29 has happened 3 times and 30-30 has happened 1 times.