Can't get my head around this; I have never bet to prices, always believing that level stakes is the way to go, but I was doodling really tonight with some results of a place plan, and came across something strange:

Betting overlays only:

Today 21 bets 13 hits returns = 22.83 = 8.75% POT this is fairly average

ok, so just for an experiment I queried backing all selections to return 100, you know basic stuff if the nag was paying 1.70c (BF) so place $59 on it etc etc

Ok so outlay to do this on 21 selections was $1095 (Hypothetically) and as there was 13 hits so the return would be $1300

Which is a profit of $205

Which is a massive 18 .72% POT

Needless to say I feel I must have done something wrong in the calculations, but have been over and over it and it seems to be correct,

What are your thoughts?