Tatts for a few ratings. I have all of them. This is for only gallops which are available on betfair and have betfair SP available. POT worked out on betfair SP prices only.

100 = 22.21% S/R with loss of 6.8% after commission on turnover.
95 = 11.33% S/R with loss of 11.7% after commission on turnover.
90 = 6.87% S/R with loss of 3.3% after commission on turnover.
80 = 3.88% S/R with loss of 16.5% after commission on turnover.


Strike rates are pretty uniform in that as the rating drops each point the strike rate drops. Profit/loss varies wildly. Above Losses include 5% commission already taken out.