You're right Darky, but you need to Lay favourites for a min average price of $3.20 to break even by my rough maths. If you could Lay them for the average Tote price you could make a profit but Betfairs SP/Lay price is nearly always greater, then less the 6.5% commish, you don't stand a chance, otherwise we'd all be doing it. The other alternative is to increase the strike rate to 84% as they quote. Good if it's true?