Heavyweight,

Now that she's won, I guess $1.35 was okay, but you're right, she probably shouldn't have come up so short compared to Fastnet Rock.

How do you do ratings? In kgs, lengths or points? If you rate horses in kgs, then you could perhaps use this price conversion table that I use. I've been fiddling about with it trying to get it to produce more accurate prices and I think I might have it about right now:

Top rated horse = 100 points
0.5 kgs behind = 87 points
1.0 kgs behind = 75 points
1.5 kgs behind = 65 points
2.0 kgs behind = 57 points
2.5 kgs behind = 50 points
3.0 kgs behind = 45 points
3.5 kgs behind = 40 points
4.0 kgs behind = 36 points
4.5 kgs behind = 32 points
5.0 kgs behind = 28 points
5.5 kgs behind = 24 points
6.0 kgs behind = 20 points
6.5 kgs behind = 17 points
7.0 kgs behind = 14 points
7.5 kgs behind = 12 points
8.0 kgs behind = 10 points
8.5 kgs behind = 9 points
9.0 kgs behind = 8 points
9.5 kgs behind = 7 points
10+ kgs behind = 6 points
11+ kgs behind = 5 points
12+ kgs behind = 4 points
13+ kgs behind = 3 points
15+ kgs behind = 2 points
20+ kgs behind = 1 point

Here's what you do. After you've done your ratings, you refer to the table and award points to each horse depending on how many kgs behind the top rated horse you have them. After you've done that, add up all the points of every horse in the race to get a total. Then divide that total by each horse's score and that will give you a price for each runner. Here's an example:

#1 Rtg 65.0 = 2.0 kgs behind = 57 pts
#2 Rtg 63.0 = 4.0 kgs behind = 36 pts
#3 Rtg 61.5 = 5.5 kgs behind = 24 pts
#4 Rtg 60.5 = 6.5 kgs behind = 17 pts
#5 Rtg 67.0 = 0.0 kgs behind = 100 pts
#6 Rtg 61.5 = 5.5 kgs behind = 24 pts
#7 Rtg 59.5 = 7.5 kgs behind = 12 pts
#8 Rtg 64.5 = 2.5 kgs behind = 50 pts

The total of those points is 320, so you now divide 320 by each horse's score and do a bit of rounding up or down to get their prices:

#1 320/57 = $5.60
#2 320/36 = $8.90
#3 320/24 = $13.35
#4 320/17 = $18.80
#5 320/100 = $3.20
#6 320/24 = $13.80
#7 320/12 = $26.65
#8 320/50 = $6.40

Hope that helps. Of course if you don't rate in kgs, then it's probably not much use.