Why the Same Part Gets Three Different Prices

The One-Man Shop with Old Machines

The lowest quote often comes from a small shop. One guy, a Bridgeport mill and an old CNC lathe, maybe a manual surface grinder. His machines are paid off. His shop is his garage or a small rented bay. His overhead is low.

How he quotes:

• He values his time at what he needs to pay his bills. Maybe $50 to $75 an hour.

• He doesn't factor in machine replacement because the machines are already old.

• He's not carrying insurance beyond basic liability.

• He doesn't have employees to pay when work is slow.

What you get:

• A part that meets the dimensions. Probably.

• A machinist who knows his equipment and has probably been doing this for decades.

• Handwritten invoices. Maybe a "good enough" approach to paperwork.

• No certifications. No traceability. No documented processes.

The risk:
If the part is simple, with loose tolerances and no special requirements, this shop can be a great deal. If the part needs tight tolerances, certifications, or consistent quality across a large batch, you're gambling.

I know a guy who runs a shop like this. He does beautiful work on simple parts. But he once quoted a medical part with ±0.01mm tolerances and delivered parts that were fine—until the customer asked for his quality management system documentation. He didn't have one. He lost the follow-up order to a shop that cost more but could provide the paperwork.

The Small Job Shop

The middle quote usually comes from a shop like mine. A handful of machines—maybe three to five—that are relatively new. A small staff of skilled machinists. A climate-controlled shop. Some inspection equipment. Probably some certifications like ISO 9001.

How we quote:

• Shop rate between $100 and $150 an hour.

• We factor in machine payments, tooling costs, and regular maintenance.

• We carry proper insurance and have overhead for rent, utilities, and software.

• We pay employees whether work is busy or slow.

What you get:

• Consistent quality. Not aerospace-level, but reliable.

• Someone who answers the phone when you call.

• Basic inspection reports if you ask.

• A shop that will work with you on design changes without charging a fortune.

The trade-off:
We can hold tight tolerances, but we're not going to win a job against a one-man shop on price alone. We compete on reliability, communication, and the ability to handle moderate complexity without drama.

I had a customer who started with the one-man shop for his prototypes. When he needed a hundred parts a month, he came to us. The parts cost more, but they arrived on time, every time, with inspection data. He told me the price difference was worth not having to chase the other guy down every month.

The High-End Production Shop

The highest quote often comes from a shop with serious equipment. Five-axis machines. Temperature-controlled inspection rooms. CMMs. Full-time quality staff. Certifications like AS9100 for aerospace or ISO 13485 for medical.

How they quote:

• Shop rate $150 to $250 an hour, sometimes more.

• They factor in the full cost of their equipment, including depreciation and replacement.

• They have quality systems that require documentation on every part.

• They carry expensive insurance and maintain rigorous training programs.

What you get:

• Process control. Every part is made exactly the same way.

• Full traceability. They can tell you what machine, what tool, what operator, what inspection results for every part.

• Certifications and paperwork that satisfy auditors.

• Capacity. They can scale to hundreds or thousands of parts without missing a beat.

The cost:
You're paying for infrastructure. That temperature-controlled room costs money. Those CMMs cost money. The quality manager who reviews every batch before it ships costs money. If your part doesn't need any of that, you're paying for things that add no value to you.

I have a customer who makes components for the military. They have to use the high-end shop. It's not optional. Their contract requires AS9100 certification, full traceability, and a quality system that can be audited. The expensive shop is the only option.

What Actually Creates the Price Gap

Let me break down the factors that make the same part cost different amounts.

Machine Capability

A one-man shop with a 20-year-old Haas can make a simple aluminum bracket. He might run it at 50% of what a newer machine could do, but his rate is lower, so it balances out.

A complex part with deep pockets, tight tolerances, and difficult material needs a newer, more rigid machine. That machine costs $200,000 or more. The payments are real. The shop rate reflects that.

Overhead Structure

A garage shop has rent that's part of a mortgage. A job shop has rent, utilities, insurance, software licenses, tooling budgets, and payroll taxes. A high-end shop has all of that plus certifications, quality staff, and expensive inspection equipment.

Overhead adds up. A shop with $30,000 a month in fixed costs needs to make $30,000 before anyone sees a profit. That gets built into every quote.

Risk Tolerance

When I quote a job, I'm making a bet. I'm betting I can make the part without scrapping it, without breaking tools, without having to rework it.

A one-man shop with low overhead can take more risk. If he scraps a part, he loses his time and the material, but he's not risking a production schedule. He can quote lower because his downside is smaller.

A production shop with employees and scheduled work cannot afford to gamble. If they quote too low and the job turns out harder than expected, they lose real money. They quote higher to create margin for the unknowns.

Quality Requirements

This is the big one. A part with a standard tolerance block and no special requirements is cheap. A part with a full GD&T callout, critical dimensions, and material certifications is expensive.

The high-end shop builds quality into the process. They inspect in-process, not just at the end. They use calibrated tools. They maintain environmental controls. All of that costs time and money.

The one-man shop will look at the drawing, make the part, check the critical dimensions, and ship it. For a lot of parts, that's fine. For a lot of parts, it's not.

Quantity and Production Approach

A job shop might quote 100 parts at a certain price. A production shop with automation might quote the same 100 parts lower because they have a faster process—but only if they can run them in a way that leverages their equipment.

The garage shop might quote low for 100 parts because his time is cheap, but his process might be manual and slow. The production shop might quote higher for 100 parts but lower for 1,000 because their automated process only makes sense at volume.

The Real Questions You Should Ask

When you get three quotes that are wildly different, don't just look at the number. Ask questions.

What machines will this run on? Old Bridgeport or new five-axis? The answer tells you something about capability and consistency.

What's included in the price? Does it include material? Inspection? Deburring? Packaging? Shipping? I've seen low quotes that turned into higher invoices when all the "extras" got added back.

What certifications do you have? If you don't need them, don't pay for them. If you do need them, make sure the shop has them.

What's your lead time? Cheap is great until the part shows up three weeks late.

Can I see some examples of your work? Any shop that does good work will have parts to show you.

What happens if a part is bad? Do they rework it? Replace it? Do they have a quality process that prevents bad parts from shipping?

What I Tell Customers

When someone shows me three quotes and asks why they're different, I'm honest.

"That $850 quote is from a guy working out of his garage. He can probably make your part. If your part is simple and you're not in a hurry, he might be fine. But if you need it on a specific date, or if you need paperwork, or if your tolerance is tight, you're taking a chance."

"The $2,200 quote is from a shop like mine. We'll make your part, check it, ship it, and if something goes wrong, you'll know who to call. We're not the cheapest, but we're reliable."

"The $3,500 quote is from a shop that does high-end work. If your part is complex, if it needs certifications, if it's going into something critical, that's the shop you want. You're paying for the peace of mind that comes from a system designed to get it right every time."

Then I ask the question that matters: "What does your part need to do?"

If it's a bracket that holds a cover in place, the cheap shop is probably fine. If it's a component in a medical device or an aircraft, you need the expensive shop. Most parts fall somewhere in the middle, and so do the quotes.

The Bottom Line

Three different prices for the same drawing doesn't mean anyone is wrong. It means the shops are different. They have different machines, different overhead, different risk tolerance, different customers.

Your job is to match the shop to your needs. Don't pay for aerospace certification if you're making a lawnmower part. But don't send a critical component to the cheapest quote just to save money.

The right shop is not always the cheapest or the most expensive. It's the one that fits what you actually need. And the only way to figure that out is to talk to them. Ask questions. Understand what you're paying for. Then make a choice based on value, not just price.

Because the cheapest part is not the one with the lowest quote. It's the one that works the first time, arrives when you need it, and doesn't cause problems down the line.

What's the biggest spread you've seen between quotes on the same part? And which shop ended up being the right choice? I'd like to hear your stories.