Ezoic's pricing model (for both Layout and Ad Tester) works like this:
After a 30 days of a free trial (when you keep 100% of the site's earnings), Ezoic then keeps the revenue a single ad at the bottom of the page that looks like this:
Our system is therefore ad supported (paid for by ads generated by the system). And because most publishers still make 50-300% more ad income (net - even after the Ezoic system keeping the revenue from a single ad), Ezoic is paying for itself and is essentially free.
There are no out-of-pocket costs, no contracts and no tie-ins of any kind. You are free to come and go as you please. The reason we don't ask for any tie-in is because we are confident that the results will speak for themselves. If you're unsatisfied you can leave the platform at any time.
If you do not want to opt for using the ad supported version, you can opt for a fixed monthly fee based on the amount of income you earn with the system each month- more info here: ezoic.com/pricing
We feel that our pricing models align the interests of our publishers with our interests over the long term. The better you and your site perform, the more money you make - the better we do too. It's in our interests that your site does well from testing using our technology. It's a win/win for everyone :)
If you decide to go with the fixed monthly fee and later decide you would like to use the ad supported option you can change the setting in your Ezoic dashboard. Go to "Account" in the top right corner and select "Ezoic Account Details" from the drop down. Next to the word "Plan" is a button in brackets that says "change." When you click on change you will be brought to a new page that allows you to toggle between "No Monthly Fee" and "Monthly."