The total price is calculated for all strategies.
It is the market price of one unit as calculated using SuperDerivatives' model if it was to be sold now under current market conditions.
It is calculated as follows:
total premium of the strategy / total volume of the strategy
It is important to note that:
This result can only be calculated if the volumes of each leg are the same. If the volumes of each leg are not the same, the result is not calculated.
When calculating this result, for the relevant strategies (i.e., a vanilla strategy or vanilla strip strategy which has more than one leg or option, one of which you are buying and one of which you are selling, all of which have the same expiry date) the system takes the choice price into account.