ABOUT KEYING Select None Required if ordering one lock, if it doesn't matter if some of the locks are keyed alike or if you want to have the locks keyed locally. No additional charge. Select Keyed Alike if you want all locks to be able to be opened with all the same keys. $4.00 additional charge per lock. Select Keyed Differently if you want each lock to have its own key and have all locks able to be unlocked by one master key. $4.00 additional charge per lock.