Cost calculation

As I’ve planned a long haul trip I’ve noticed that the price calculation is somehow off.

I’ve selected only EWEgo stations with my tariff of 0,52 € and the total cost suggests 80 euro for 176 kWh which would be effectively 0,45 €.

When I select EnBW only where I pay 0,56 without subscription (it claims the price would be 0,76 which is not correct). The total is 116 € for 179 kw which is 0,64 effectively.