Meta says ad sets under 50 weekly conversions cost 28% more per purchase
TLDR
Meta reports that ad sets generating fewer than 50 weekly conversions experience 28% higher cost-per-purchase, based on 2024–2025 lift data.
Meta confirmed that ad sets falling below a threshold of 50 weekly conversions incur a 28% cost premium per purchase. The company bases this finding on lift data spanning 2024 and 2025, and advises advertisers to structure budgets accordingly—dividing weekly budget by 50 and using the result as a cost-per-result cap to optimize campaign efficiency.
