Right, here's a handy tip for you but just remember not to press any confirmation buttons to place your bets yet
If you look just above the pink prices you will see a button that says "options"
Click on it and check the boxes as below
Profit and Loss displayShow Profit and LossInclude Settled Bets

Useful in partially settled markets.Display P&L net of commissionDisplay "what if" figure

Shows what will happen to your P&L if unplaced bets were matched. Stake selectorShow stake selector Odds displayShow best prices onlyShow averaged odds

Odds are averaged around the value set in the stake selector. Auto refreshRefresh automatically every 30
Then if you type a number into one of the boxes as if you were placing a bet it tells you what the outcome will be if you win/lose. This means that if you did happen to take a stupid price this would warn you before hand (hopefully)