I've just started using Bet Angel with Betfair but I'm confused over something.
I set up a back and lay at one or two ticks which should generate a small (very small at the moment as I'm testing different theories), however when it comes to payout I always break even and I'm at a loss as to why.
For instance I have just done this bet:

Should this have produced a profit of 20p regardless?
If so, it didn't I simply broke even as this shows:

I understand that I am probably missing something simply but would appreciate help in guiding me in the right direction.
Thanks
Steve