I remember I inquired about one of those Queensland based ones once years back. They took me through the program live online and they had a platform that showed all the bets being placed with the totes and you also would have say 3 different tote accounts so you could get the best price back then.

From memory it did okay but there were some losing races. With the asking price being something like $10,000 I gave it a miss.

I tried to look at the VIC TAB site as they have the fluctuations and % amounts that horses have come in/gone out for the previous minute(s) or whatever but I didn't do too well so gave up on that idea.