This was something I looked for and can be profitable but unfortunately it takes time to do and very easy to miss one.
1 you need to look at the morning 1st shows around 9am
2 you need to look at the r/post tissue prices
3 view their card and use one of the bookies prices [ I used Ladbrokes]
4 scan all races then if you see one open up that race
You are looking for any horse that has a double digit tissue price yet the actual bookies price is at least 40% less so for instance a 20/1 shot would be 12/1 or less with the bookie.
If you see such a race then if you open that individual race on the r/post web site and if you use Ladbrokes the said horse must NOT HAVE BEEN BACKED IN which are shown anyway and the one to take a second look at.
Its a long time since I did this and 90% SURE it happened a lot more on the A W and e more of a look is needed if the actual tissue price for the race is the OUTSIDER OF THE FIELD that as dropped at least 40 %
At 1st I thought it was just a mistake or coincidence but it happened to often in my eyes and winners do come along.
Dived tissue price by 10 then multiply by 4 and if the bookies price is this amount less than the tissue price this becomes one to consider.
As I said it can be a bind but some stick out like a sore thumb and are 50 % + less
I only used Ladbrokes as an example and any bookies would apply as its just something I used to look out for when they were 40% less than R/POST TISSUE price at the morning opening price of the bookies.
To be honest at the time I did this it may well have been BET365 but it was a couple of years ago