> replacing even cheap locks would be much more expensive than having them re-keyed.
Replacing a cheap (or even average household) lock is cheaper than the minimum labor charge a locksmith will charge to show up, but you still need someone to do the labor of replacing it.
Also, if you use certain brands of lock, if you buy one new lock of the same brand it comes with a special rekeying tool that will allow you to rekey all your matching-brand locks to the key that comes with the new lock.
Replacing a cheap (or even average household) lock is cheaper than the minimum labor charge a locksmith will charge to show up, but you still need someone to do the labor of replacing it.
Also, if you use certain brands of lock, if you buy one new lock of the same brand it comes with a special rekeying tool that will allow you to rekey all your matching-brand locks to the key that comes with the new lock.