Commission is the killer!!!!!

I asked Betfair for my detailed P&L since 2006. Overall I'm a winner .... except for the £42,440 commision !!!!!!!!!!!  Which makes me a loser...

I think that you can't really win on here unless your commission is really low (2, 2.5%).

1)Does anyone know what percentage of us are on 2% commission (I imagine they must be betting 24 / 7)

2) The purple site is on 3% the whole of this year. Does anyone know if it's easy on there to lower to 2% or would you be stuck on 3% without being able to lower the rate (too many points to get)

Thanks!