Has an AFL game ever ended 82-30?
Exactly once. On September 18, 2020, St Kilda beat GWS 82-30, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 82-30 in league history.
That makes 82-30 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 83-30 has happened 1 times and 82-31 has happened 1 times.