Explore standardized definitions, formulas and usage guidance for key ecommerce performance metrics.
Marketing Efficiency Ratio (MER) measures total revenue generated for every dollar spent on advertising. It helps gauge overall marketing effectiveness and efficiency across all channels.
What was our MER for last month?
SELECT ROUND(s.ads_net_sales / NULLIF(a.spends, 0), 2) AS mer FROM spends WHERE spends_date BETWEEN :start AND :end;