This column in the grid displays the projected Betfair Starting Price (SP) based on the SP bets already placed and the current exchange prices.

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Move your cursor over the left hand side of the column to place a back SP bet and over to the right to place a lay SP bet.

You will see that the background colour changes to indicate whether you are placing a back or lay SP bet

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Once you have clicked, a pop up window will appear, regardless of whether you have Verify Bets ticked or not

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The pop up gives you the option to set the odds limit that you are prepared to accept for an SP bet, so your bet will only be matched if the SP is within the limits that you have set.

If the odds fall outside of your limits then the bet will not be placed or matched.

To read more about Betfair SP please see Betfair Starting Price