If targeting the top 3 favs in the live market.

Combined SR 65%
30%
20%
15%

If our average price on the 2nd & 3rd selection is say 6.00 (12.00 combined) at 35% SR
= Ret 210.00

Saving on the Fav Ret 100.00

Total Ret 310+
O/L -----300

We have just mentioned the min possible , there is always the juicy payers in between that make up the big difference.
Just have a look at what some of those 3rd favs pay when they get up where there is a combined $12.00 total for the 2nd & 3rd Fav.

If you have some doubt about this ,start laying them & see what happens to one's bank balance.

Cheers.

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Cheers.