a/c heater controls

Hello everyone, i have an a/c heater control setup out of my 70 duster for sale. The push button control module is a new unit that i had in the car for ~ 1 year (BUT i never used my heater/ a/c). However, the fan switch doesnt work. You might also see that one of the studs on the plastic face is sheared. asking $50 plus shipping as a place to start, but im flexible..thanks for looking.