How Much Does Key Cutting Cost Compared With Having a Locksmith Cut Keys?
Kiosk and hardware store key cutting is cheaper per key than a locksmith, typically by a few dollars. The difference in output is accuracy. Locksmiths cut to the manufacturer's original code on calibrated equipment, while kiosks trace or photograph the key you hand over, reproducing any wear already present. A slightly inaccurate copy still works and quietly wears the lock, which is why the cheaper key is not always the cheaper outcome.

Key cutting looks like a commodity. The same blank, the same cuts, a working key at the end. Price is the only visible difference, so most people choose on price and reasonably so. The part that is not visible is how accurately the copy matches the specification the lock was built to, and that accuracy is what determines whether the key costs you anything beyond its price.
What You Are Paying For in Each Case
Kiosk and hardware store cutting.
An automated kiosk photographs the key blade, software identifies the profile and estimates cut depths, and the machine cuts a blank. No person is involved. At a hardware store counter, the original is clamped against a tracing stylus which follows the existing cuts while a cutter reproduces them on the blank.
Both methods copy the key in front of them. If that key is worn, the copy reproduces the worn dimensions rather than the original specification.
A locksmith can cut by code. Most residential cylinders correspond to a manufacturer code specifying the exact depth at each cut position, and cutting to that code produces a key matching the original factory specification regardless of what condition your existing key is in. Equipment is calibrated regularly and cutter heads are maintained.
The practical difference is that one method copies your key and the other recreates the key your lock was designed for.
Why Small Inaccuracies Matter
A cut that is a fraction of a millimetre off still works. Spring tension in the pin stacks accommodates a surprising amount of variation, which is exactly why the problem goes unnoticed.

What that variation means mechanically is that every insertion lifts each pin to slightly the wrong height. Pins are being pushed past or stopped short of where they should sit, under spring load, several times a day. Over thousands of operations this wears flats onto the pin tips, fatigues the springs, and opens up the tolerances that make the lock work.
The result arrives slowly. The lock becomes marginally stiffer, then noticeably stiffer, then inconsistent, and eventually neither the copy nor the original operates it reliably. At that point the cylinder needs replacing, and the cost of that replacement dwarfs whatever was saved on key cutting.
Where the Cheaper Option Is Genuinely Fine
Spare keys that will rarely be used.
A backup held off site and used twice a year does almost no wear regardless of accuracy.
Low value locks.
A shed, a gate, an outbuilding where the cylinder is inexpensive and the consequences of early failure are minor.
Simple, common profiles.
Kiosk software handles widely used residential profiles reasonably well. Accuracy drops on less common profiles and on keys with tighter tolerances.
Where the original is in good condition.
Copying a nearly new key produces a far better result than copying one that has been in a pocket for eight years.
Where a Locksmith Is Worth the Difference
Daily use keys for the main entry.
The key that gets used four times a day on the cylinder that matters most is where accuracy pays for itself.
When your original is visibly worn.
Copying a worn key compounds the problem. Cutting to code resets to the original specification and can actually improve how the lock operates.
High security or restricted cylinders.
Restricted profiles cannot be cut at a kiosk at all, because the blanks are not supplied outside authorised locksmiths. High security cylinders have tighter tolerances that are less forgiving of variation.
Multiple keys at once.
When cutting several, the per key difference narrows and the consistency across the set improves.
When the lock is already stiff.
Cutting a fresh key to code is the cheapest possible diagnostic. If a new accurate key resolves the stiffness, the cylinder was fine and the old key was the problem.
The Honest Summary
For a rarely used spare on an unremarkable lock, kiosk cutting is sensible and the saving is real. For the key you use every day on your front door, the few dollars saved is a false economy measured against cylinder replacement, and the gap narrows further if you need several keys cut at once.
Frequently Asked Questions
How can I tell if a copied key is slightly off?
Compare it against the original in use. A good copy feels indistinguishable. A copy that needs a firmer push, a slight lift of the handle, or occasionally fails on the first attempt is telling you the cuts are not matching the pin heights correctly.
Can a locksmith cut a key if I have lost all of them?
Yes. A locksmith can read the code directly from the cylinder and cut a key from it without needing an existing key to copy. This also produces a key matching the original factory specification.
Does copying a copy make things worse?
Yes. Each generation copied from a physical key rather than from code introduces additional variation. A third or fourth generation copy can be noticeably off specification and will wear a lock measurably faster.
Restricted and patented profiles are not available as blanks outside authorised locksmiths, which is the entire point of them. A kiosk that cannot cut your key is evidence the key control on that lock is working.
Restricted and patented profiles are not available as blanks outside authorised locksmiths, which is the entire point of them. A kiosk that cannot cut your key is evidence the key control on that lock is working.
My lock has become stiff. Would a new key fix it?
Possibly, and it is the cheapest thing to try. If the existing key is worn, a fresh key cut to code often restores smooth operation immediately. If stiffness persists with a new accurate key, the cause is inside the cylinder and needs servicing or replacement.
Contact Malvern Lock Service on 0477-615-507 for key cutting across Melbourne's inner south east. Neale cuts keys to manufacturer code on calibrated equipment, including from the cylinder when no original key exists, and can assess whether worn copies have already caused wear to your locks. Over 35 years of experience. MLAA member and VIC Police registered. Serving Malvern, Malvern East, Armadale, Toorak, Prahran, South Yarra, Glen Iris, Camberwell, Glen Huntly, Hawthorn, Kooyong, St Kilda, St Kilda East and Surrey Hills.