Out of interest and looking at 2011 results
Taking only Metro races on Saturday meetings
Take the Top Starting Price horse and then the different range of prices per favourite for the following

1.1 to 1.5 69 races, 57 winners +10.8%POT SR 82.60%
1.6 to 2.0 248 races, 127 winners -9.4%POT SR 51.20%
2.1 to 2.5 366 races, 149 winners -6.0%POT SR 40.70%
2.6 to 3.0 375 races, 139 winners +3.8%POT SR 37.1%
3.1 to 3.5 389 races, 97 winners -18.1%POT SR 24.9%
3.6 to 4.0 260 races, 54 winners -21.5%POT SR 20.8%
4.1 + 335 races, 68 winners -5.6%POT SR 20.3%

I might do more work on this if anyone is interested.
Can isolate particular tracks etc.

I'm at a standstill with my punting and just trying to help other with statistical information.

I find it easier to find a good educated punter that not many people follower, let him do the work and back the horses.

Not enjoyable but I'm sure my drive will come back.