My original response to this question was written back in 2015 and these days I am a lot less sure that OCs can have by-laws that appear to impose fines or “costs” on owners. I know that some strata lawyers are advising owners corps to have such by-laws as deterrents, but I seriously doubt if they will stand up if challenged at NCAT.
There are provisions in strata law for NCAT to award costs and I think that is the way to go. You could howver include in your by-laws that the OC will pursue the matter of costs as vigorously as possible at NCAT.