Why do quotes from different Chinese factories vary so much?

Why does the same product come back at five different prices?

Send one drawing to five suppliers in Shenzhen, Ningbo, and Yiwu and the quotes can land anywhere from $3.10 to $5.40 a unit. The instinct is to assume the cheap one is lying and the dear one is greedy. Usually neither is true. A quote is a factory's reading of an incomplete brief, priced against its own materials, its own machines, and its own position in the supply chain. Change any one of those and the number moves. So a spread is not a verdict on honesty. It is a signal that the suppliers answered slightly different questions, and you cannot decide on price until you have made them answer the same one.

Reason 1: Are they even quoting the same product?

Most of the gap comes from spec ambiguity. If your request for quotation (RFQ) does not pin down material, dimensions, tolerances, finish, packaging, and quantity, each factory fills the blanks with its own defaults, and the cheapest default wins the quote. One assumes a thinner wall, another a lower-grade zipper, a third leaves out retail packaging entirely. They are all pricing a slightly different object. A complete RFQ built around a bill of materials (BOM) removes most of the variation before it starts, because there is nothing left to assume.

Reason 2: Different materials behind the same name

"Stainless steel" is not one thing. 304-grade costs noticeably more than 201-grade and resists corrosion far better, so a quote built on 201 undercuts a 304 quote on the identical drawing. The same gap appears in plastics (virgin ABS versus recycled), fabric (600D versus 300D polyester), electronics (a brand-name chip versus a clone), and surface coatings. When a price looks too good, the saving is almost always sitting in a material substitution you never specified. Name the grade, the brand, and the relevant standard in the BOM so nobody can swap it out quietly.

Reason 3: Factory, trader, or middleman?

The companies quoting you may not all make the product. A real factory quotes close to its own cost. A trading company adds a margin on top of a factory's price, so its quote runs higher for the same item, or it shops your RFQ to the cheapest sub-supplier and quotes low to win the order. Where each company sits in the chain changes the number and changes who can actually fix a quality problem later. If you do not yet know which is which, that is its own check: see how to tell a real factory from a trading company.

Reason 4: Quantity, MOQ, and tooling priced differently

Unit price falls as volume rises, so a quote for 1,000 pieces and a quote for 5,000 are not comparable even from the same factory. Setup and tooling get spread differently too. One factory amortizes a $4,000 mould across your first order and quotes high; another already owns a near-identical mould and quotes low; a third buries the tooling inside the unit price where you never see it. Always state the exact quantity, and ask for tooling, setup, and sample costs as separate lines. Worth knowing alongside this: how minimum order quantities work and how to negotiate them down.

Reason 5: The quote covers different things (Incoterms)

A factory quoting EXW (ex-works, goods sitting at the factory door) will always look cheaper than one quoting FOB (loaded onto the ship) or DDP (delivered to your door), because the cheaper number leaves freight, export clearance, duty, and insurance for you to pay later. Two quotes on different Incoterms (the International Chamber of Commerce's standard set of trade terms) are not the same quote at all. Fix one term for everyone and compare on landed cost (the all-in price to get a unit to your warehouse), not the headline number.

How do I compare quotes from Chinese factories fairly?

Standardize the request and the spread shrinks to the differences that actually matter:

• Send every factory the identical RFQ with a BOM: material grade and brand, dimensions and tolerances, finish, packaging, and the exact quantity.
• Fix one Incoterm for all of them (FOB is the usual baseline) so freight and duty sit in the same place.
• Ask for tooling, setup, and sample costs as separate lines, not folded into the unit price.
• Request the price at two quantities so you can see the volume curve, not a single point.
• Have each supplier confirm in writing they are quoting your exact materials.

Now you are comparing like for like, and a genuine outlier means something real.

When is the cheapest quote a trap?

A quote far below the pack is information, not a discount. It usually points to a cheaper material, a smaller scope of work (no packaging, no testing, EXW rather than FOB), a trader who will squeeze a factory and pass the cut corners to you, or in the worst case a deposit-and-disappear setup. Do not accept or reject it on price alone. Ask the supplier to itemize what is included, confirm the material grade, and verify the factory before any money moves. The cheap number is only a bargain once you know what it actually buys.

Where Mila Sourcing fits

We write the RFQ and the BOM for you, send the same locked spec to verified factories, and put every quote on the same Incoterm so you compare landed cost instead of guessing. You see the supplier's business license, the production floor, and the line-by-line breakdown before a deposit moves. That is the core of Sourcing Activation and Full Production Management.

Related, if you're collecting quotes right now:

• What is MOQ and how do you negotiate a lower one?
• How do I know if a supplier is a real factory or a trader?
• Supplier sourcing in China: a practical guide