Factory Plant Effect Modifier

[TechnoType]FactoryPlant.Multiplier= (double - multiplier, defaults to 1.0)
The effect of the CostBonus tag for this type is multiplied by this value to either increase, decrease, or nullify it. Fully supported values are between -1.0 to reverse the effect to 1.0 to not affect the effect. 0.0 nullifies the bonus.

Values beyond 1.0 can potentially cause the cost to drop to 0, if the effect of the product of all cost bonuses is multiplied by a too large value.

Formula: final bonus = 1.0 - (1.0 - product of all cost bonuses) * multiplier

Example: cost bonus = 0.6; multiplier = 0.5; final bonus is 0.8. In other words: if a bonus reduces the cost to 60% and the multiplier only grants half of that, the final price is at 80% of the original cost.