Has an AFL game ever ended 128-55?
Exactly once. On August 31, 1963, St Kilda beat Sydney 128-55, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 128-55 in league history.
That makes 128-55 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 129-55 has happened 1 times and 128-56 has happened 4 times.