Have you ever understood the cost per actual conversion?
A conversion could be a result of an email opt in, an e-commerce sale or a higher level of site engagement, etc.
The cost per acquisition refers to a media buy (e.g Advertising space), purchasing an email list or a PPC (Pay per click) investment, etc.
In order to calculate the actual cost per conversion the testing techs go deep into the funnel and measure how much you are spending on your media.
In order to save money you need to understand how you can calculate your actual cost per conversion. Read more about CPA click here: