Has an AFL game ever ended 124-73?
Exactly once. On July 26, 1941, Melbourne beat Sydney 124-73, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 124-73 in league history.
That makes 124-73 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 125-73 has happened 4 times and 124-74 has happened 2 times.