Commercial-Grade Lock Replacement: reading the quote

Yes, and it is worth having it checked even when the door still appears to function. A cylinder that was drilled at, pried or struck can be weakened internally without showing it externally, and a bent strike or a cracked frame around the lock can let a door appear locked while offering far less resistance than it should.

Number of doors involved

One entrance is the simplest case. Bringing several doors, or several branch locations, onto matching hardware or one key system in the same engagement is priced across the whole set rather than door by door in isolation.

Removal of old hardware

Whether old locks, cylinders and strikes are left with the business, disposed of, or kept as spares for a wider system is a small choice that can affect the time and scope named in the quote.

Electrified hardware and access-control integration

An electric strike, maglock or reader tie-in adds parts and testing time beyond a purely mechanical lock, and the quote separates that electrified work from the mechanical hardware so each is clear on its own.