Has an AFL game ever ended 108-29?
Exactly once. On June 23, 1900, Melbourne beat St Kilda 108-29, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 108-29 in league history.
That makes 108-29 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 109-29 has happened 1 times and 108-30 has happened never.