Yes, we are in fact doing Big Bash League markets this year.

Resolves 100% to the winning team.

The final should be near the end of January.

I don't think a draw is possible.

If the final doesn't happen and they still declare a champion or co-champion, resolves to them equally. If the final doesn't happen and no champion is declared, resolves N/A.

If the original result on the day is overturned for some reason, that will not cause this market to re-resolve. Whatever team is awarded the championship trophy after the match is the winner.