Price on door popper install

I have the poppers, and I have the interior doors apart, what would be a fair price to have them installed, and who does this kinda work.

i do, but i need to know make of the car and you will need to prob take out interior behind the door post to mount the popper pads… i would really need to take a look at it

85 monte , door panels are off, now, so that should save some time.