Credit Pack Options (Value of a Credit)

Hello, My organization has purchased a new Adobe Stock plan this year which no longer includes vodeo or music. I was informed we now have the Pro Edition plan. Unfortunately, that really doesn't help as I produce a number of training videos and need access to stock footage and music. 

I was told for any premium assets (now video & audio) I would need to purchase a Stock Credit Pack. 

I am trying to get a sense for how many credits I would need in order to purchase the number of assets I could expect to consume over the course of a year. What is the credit value as it related to video/audio?

Real examples would greatly help here. In fact, if it already exists somewhere on the Adobe Stock site, kindly direct me. Otherwise, it would be ideal if you could put credit numbers next to the prices so one might be able to make an informed decision as to what Credit Pack to request/purchase. I apologize if I overlooked it. Thanks in advance.