We don't post a flat number here because roller jobs vary by how many rollers are bad, whether the track needs realigning, and whether the hardware is the original steel roller and stem setup common to houses built in the mid-1980s. A single-roller swap is a small job. A full 10-roller changeout on a double door, done right with track adjustment, costs more in labor than parts. Given the median household income in this area runs well above the regional norm, we see more owners opt for the nylon upgrade across the whole track rather than patching one roller and leaving the rest to fail six months later. Ask for the number before we start, not after.