The higher odds you choose, the more expected profit you will make.
This is because although your chances of winning the trigger bet go down (and so receive the Treble The Odds promotion), you will receive a much larger free bet.
However, as always the more money you need in the exchange. Plus by winning a bet with high odds, your free bet amount could be as high as £100 free bet - in this case you would need a larger balance in Betfair to lay off your free bet. Below is a table summarise the outcomes:
|888 Back Odds
|£10 Trigger Bet
(Chance of Winning)
|Expected Free Bet Value*
*If you were to choose 2.0 odds, you would have a 50% chance of winning a £20 free bet. This has an expected free bet value of £10, being £20 free bet * 50%.
Whereas if you were to choose 6.0 odds, you would have a 17% chance of winning a £100 free bet. This has an expected free bet value of £17, being £100 free bet * 17%.
To make this even easier and faster, I compile the best bets with high odds available each day. Check out the blog for the most recent 'Trigger Bet and Free Bet: Weekly Selections' and scroll down to the free bets section.
To view decimal odds rather than fractional odds, use the bottom left menu: