[kylecazar]

"Im looking for a number that’s affordable for those that want to make a few calls as well as those looking to make thousands of calls without costing them too much."

I've been in this exact scenario before. What we decided on was a generous amount of free API calls included in the standard sales agreement/tier, with anything above 5000 reqs/monthly a bolstered on package.

Of course it will depend on the nature of your calls (are they really going to cost you much, even for many?), the nature of the relationship with your customer, etc. But it was smooth sailing for us.