Unfortunately, there is no magic formula for this.
The answer is – It depends!
The main factors that determine the ads costs are:
– Timing: The month, day, and even hour can affect ad cost.
– Bidding strategy: Whether you choose the lowest cost or a specific bid cap.
– Ad placement: Higher-competition spots cost more.
– Ad relevance: Low scores for your ad’s engagement ranking, quality ranking, or conversion ranking can raise costs.
– Target audience: Higher competition audiences cost more.