Book Percentage Explained
Book Percentage is a figure found on top of the back and lay price columns on Betfair. This tells you in percentage terms what all the decimal prices for each runner add up to. In an efficient market the back Book Percentage will be just over 100% and the lay Book Percentage will be just under 100%.
Gruss Software tracks all you need to know to make the best informed decisions, keeping you up to date and betting accurately in real time. You can try it for free.
"No other commercially available software would have allowed me to make the substantial income I have been enjoying."