Hi Bhagwan,

Do you know what difference, on average, there is between backing and laying on Betfair? If I was trying something out say with lay bets but wanted to see what odds the back bets would be how much percentage difference would there be?

I'm guessing the favs will most likely be only 1 step difference but what about the $10, $20, $30, $40 layed odds horses? What would their back price most likely be?