We can't quote a number here without seeing the door, but we can tell you what drives the bill in Vinings. Most houses in this pocket went up around 1994, which puts the original tracks and rollers at roughly thirty years old - old enough for the galvanized coating to be flaking and the roller bearings to be dry, but not so old that the whole door needs replacing outright. A track that's bent from a car bump is usually a bracket and track swap. A track that's pulled away because a cable snapped is a bigger job, because the drum and cable both need attention before the door goes back on rail. The variable isn't the town, it's which of those two you've got, and we won't know until we're standing in front of it. What we will say: if the door is original to a 1994-era build and one side is sagging on top of being off-track, you're often looking at hardware replacement on both verticals, not a patch job on one.