If the productivity boost is so high, what's a good price for it? $100/month might be more than now, but how many paid hours of dev time are saved by it? Asking as a non-user.
For my previous job, it would save me 5min / week.
And it also saves me of using the keyboard so I guess it's also better for those with carpal tunnel syndrome.
A gradual pricing per request would totally work for me, cheap when I'm not using it, justified when I'm using it a lot.
In fact I imagine that in most places this would pay for 1 hour of their time. Which you pay per month for copilot.
So the question is not how many developers you save. But if you save more than one hour per month per developer.
I'd imagine that will be fairly easy to achieve.