A good cost per acquisition ratio is 3:1, so ideally about 3 times lower than the customer lifetime value (CLV).

A good average CPA is one that is significantly lower than the Average Order Value (AOV) or Lifetime Value (LTV), ensuring a reasonable Return on Ad Spend (ROAS). For example, if AOV isR$100 and CPA isR$20, that's a healthy scenario, pointing to profitable campaigns.