A pro. punter is one who actually lives off the punt, not a punter who can show a regular profit. I think perhaps Mark is a pro. punter [sorry Mark if I'm wrong] who has the ability and capacity to arbitrage a large amount of money on Betfair every week. Enough for the slender profit % to enable a life on it but he probably has other forms of income too. Anyone else here [not me anyway]? I doubt it.
In fact I think there are very few pro. punters in Oz. Big punters sure, but Pro. punters who live off punting? I don't think so.