You send the same RFQ to five suppliers. The quotes come back spread from $0.21 to $0.34 per folding carton — a 60% gap that looks like negotiation room but is usually a spec gap. Until every quote describes the *same* box, the numbers cannot be compared. Here is the normalization checklist, and where low quotes typically save money.
Why Identical RFQs Produce Different Prices
Most RFQs are sent as a photo and a target quantity. The factory fills in the blanks with its own assumptions: whatever board is on the floor, one printing pass, the cheapest lamination. The fix is to send a written spec and require every quote to repeat it back line by line.
The Quote Normalization Checklist
Put this table in your RFQ and ask each supplier to confirm every row before pricing:
| Spec line | What to pin down | Typical spread if left open |
|---|---|---|
| Board | Material + grammage (e.g. 350gsm white card, not "white board") | 8–15% of unit price |
| Printing | CMYK vs CMYK+PMS spot colors, inside printing or not | 5–12% |
| Finish | Matte vs gloss lamination, spot UV, foil or none | 5–20% |
| Structure | Exact dieline, glue type, crash-lock vs side-glue | 3–8% |
| Inserts | EVA, molded pulp, paper card or none | 0–30% |
| Carton packing | Units per export carton, gross weight, carton size | freight per unit swings 10–25% |
| Tooling | Die cost included or amortized, ownership | $30–150 one-time |
| MOQ | Full-price MOQ vs bulk-break price | 10–20% |
If any row is missing from a quote, the price is not a price — it is an estimate with unstated assumptions.
Board and Grammage: The Most Common Invisible Substitution
Board is where low quotes hide money. There is no universal "350gsm": coated duplex (CCNB), folding boxboard (FBB) and recycled greyline with the same grammage differ visibly in stiffness, whiteness and bulk. A common trick is quoting 300gsm FBB against your 350gsm spec — grams are not comparable across board families, and stiffness drops faster than grammage does. Require the exact board family, grammage and brand or equivalent, and ask for a caliper (thickness in mm) reading on the sample. For rigid gift boxes the same applies to greyboard density: 1.5mm, 2.0mm and 2.5mm wrapped board look identical in photos and differ by roughly 15–20% in material cost. Our folding cartons and rigid boxes pages list the exact board specs we quote against, so the baseline is never ambiguous.
Where Low Quotes Actually Save
When a quote lands 20%+ below the field, the saving is almost always in one of these places:
- Thinner or lighter board than specified (see above).
- Skipped lamination or a thinner film — matte lamination costs roughly $0.01–0.03 per carton and prevents scuffing in transit.
- Fewer QC steps — no on-line inspection, no final AQL check, "self-check only."
- Lower greyboard density or unseasoned board that warps after lamination.
- Recycled core under a white surface that delaminates on folds.
- Optimistic carton packing — more units per carton shrinks the quoted freight estimate you will later pay the difference on.
None of these are visible in the artwork proof.
Freight per Unit: The Row Everyone Forgets
Two quotes can be identical per unit and still differ 15% landed, because carton cube differs. Normalized landed cost is:
Landed unit cost = quoted unit price + (sea freight per carton ÷ units per carton)
Ask each supplier for units per export carton *and* carton dimensions, then compute freight per unit yourself. A supplier who packs 200 pcs per carton against a rival's 170 pcs wins on container cost even at a nominally higher unit price.
Making Quotes Comparable in Practice
1. Send one written spec sheet (the table above) with your RFQ — not photos alone. 2. Require each supplier to confirm the spec in writing before quoting. 3. Ask for a cost breakdown by board / print / finish / tooling / packing; most factories comply, and it exposes where the spread lives. 4. Award a paid sample against the spec, not against a render.
If you do not have a spec sheet yet, our custom ODM service turns a reference product or sketch into a costed spec you can circulate to any factory — including us.
FAQ
Is it rude to ask a Chinese supplier to break down their quote?
No — line-item breakdowns are routine in B2B packaging. Frame it as "please confirm the spec and show the cost lines" rather than "explain your margin," and most factories respond within a day.
How big a price difference should I expect between quotes on the same spec?
On a fully normalized spec, quotes typically cluster within 10–15%. A spread wider than that usually means a spec row is still open — most often board, finish or packing.
Should I always take the lowest normalized quote?
Not automatically. Add two qualifiers: payment terms (30% deposit vs 100% T/T shifts real risk) and whether the quote assumes sea-freight packing. A quote 5% higher with proper QC and honest packing data usually lands cheaper.