We don't have a flat number to quote here, because the range depends on what's actually broken and whether the drum, track, or cable took damage along with the spring. What we can say is this: with about 6,002 households in Dunmore, this isn't a sprawling market, so most of the broken-spring calls come from a narrow band of houses built in the postwar rush of the early 1950s, and the parts needed tend to repeat from job to job.
Median household income in Dunmore runs around $75,632, higher than the $68,010 median across the wider service area, which is why more owners here ask about replacing the whole door rather than patching the one spring - the math works out differently when you're not stretching a repair budget as far. We'll always tell you straight if a repair is the better call or if the door's old enough that fixing it is just delaying the inevitable.