Hi barny.

One way that i determine this is to look at a horses last three starting prices.

Say st-3 = s/p$26.00
st-2 = s/p$15.00.
st-1 = s/p$8.00.

Regardless of any other factor it's one way to judge a horses improvement.

When i see a horse with a big price drop from say $21.00 last start too now
say $5.00 to me for whatever reason (MILLIONS OF THEM) i consider carefully

It's definitely not the be all end all of assesing an improved run
just one small part of the puzzle?

Cheers
garyf.