Pauls123, I was a bit confused there but I think Wes means that the average SP of the WINNERS was $3.66 = $19,419.96 not so good!

But still, remember that this would include joint 100 pointers i.e. more than one in a race (I presume) also includes all types of races and Tracks. So I do believe that it can provide a basis to tweak it down to a profit. eg.
1. No bets worse than Dead
2 No bets on maidens, fillies.mares races, jumps, amateur, Ladies races etc
3 Raced within 21 days only
4 At least placed once at the distance
5 Delete if ridden by 3kg claimer
6 Delete if set to carry more OR less than 3.5kgs than set wieght last start, or if set to carry more than 60kg's (IGNORE ALL CLAIMS)

Thats just a start but I reckon allready you'd be getting down close to break even.

PS What would be interesting is the outcome of 100 pointers when Unitab, NSW TAB agree??