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.