Inspection before estimating
That takes eyes on the door. What helps us get close on the phone: the age of the house if you know it (a lot of Redlands homes were built between 1958 and 1999, median around 1981, and that era tells us a lot about what spring and track hardware is probably back there), whether it's a one-piece or sectional door, and whether the problem is the opener, a spring, a cable, or the door binding in the track.