Repair or replace?
The honest answer depends on what has worn. Alignment problems, tired latches, worn spindles and dirty cylinders are usually repairable, and repairing them is cheaper than replacing good hardware.
Where a lock has internal damage, where parts are no longer available, or where the hardware is simply at the end of its life, we say so and quote the replacement instead. Repairing something that will fail again in a month is not a favour.

