Has an AFL game ever ended 85-17?
Exactly once. On May 21, 1898, Geelong beat St Kilda 85-17, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 85-17 in league history.
That makes 85-17 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 86-17 has happened never and 85-18 has happened never.