Has an AFL game ever ended 128-76?
Exactly once. On April 18, 1981, St Kilda beat Melbourne 128-76, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 128-76 in league history.
That makes 128-76 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 129-76 has happened 4 times and 128-77 has happened 1 times.