I set up a Facebook Ads campaign to advertise on Instagram, using three similar ads with only slight text variations. All targeted the same geographical region. Despite the similarities, I noticed that one ad costs 30 cents per profile visit, while another costs 70 cents. This difference happens because even small changes in ad copy can affect how users respond. If one version resonates more with the audience, it will get more clicks and engagement, making it cheaper for Facebook to show. The platform's algorithm favors ads with better performance, reducing costs for those with higher click-through rates or relevance. Testing variations helps identify what works best and allows you to optimize your campaign for better results and lower costs.