Has an AFL game ever ended 105-55?
Exactly once. On June 18, 1927, Melbourne beat St Kilda 105-55, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 105-55 in league history.
That makes 105-55 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 106-55 has happened never and 105-56 has happened 5 times.