It is common for buyers to receive injection mold quotes from China that differ by 30 percent, 50 percent or even more. This does not always mean one supplier is dishonest. It often means each supplier is quoting a different version of the tool.
To compare quotes safely, you need to understand what is inside the tooling price.
Main Reasons Mold Prices Vary
Mold Steel
Different steels have different cost, hardness, polishability and life. A simple low-volume part may not need the same steel as a high-volume engineering component.
Ask the supplier to state the steel grade for the core, cavity and mold base.
Cavity Count
A single-cavity mold costs less upfront but produces fewer parts per cycle. A multi-cavity mold costs more but can reduce unit price for higher volumes.
If two quotes use different cavity counts, they are not directly comparable.
Mold Life
Some tools are built for a short production run. Others are built for hundreds of thousands or millions of shots.
Mold life affects steel, heat treatment, components, maintenance and total cost.
Hot Runner vs Cold Runner
Hot runner systems cost more upfront but can reduce waste, improve cycle time and support certain part designs. Cold runners are simpler and cheaper but may create more scrap.
The right choice depends on resin, part design, volume and cosmetic requirements.
Surface Finish
High gloss, texture, transparent parts and visible cosmetic surfaces require more careful tooling, polishing and process control.
If your product has a visible A-surface, make that clear in the RFQ.
Engineering and Sampling Support
Some quotes include DFM, mold flow analysis, sample rounds and basic changes. Others include very little beyond cutting the tool.
Low engineering support may look cheaper at the quote stage and become expensive during sampling.
How to Compare Quotes
Use this comparison table:
| Quote item | Supplier A | Supplier B | Supplier C |
|---|---|---|---|
| Mold steel | |||
| Cavity count | |||
| Mold life | |||
| Runner system | |||
| Included samples | |||
| Engineering changes | |||
| Tooling lead time | |||
| Part price | |||
| Quality plan |
If a supplier cannot fill in these details, ask before you choose.
When a Lower Mold Price Makes Sense
A lower-cost tool may be appropriate when:
- The product is still being tested
- The production volume is low
- Cosmetic requirements are simple
- The part is not safety critical
- You expect future design changes
In those cases, prototype tooling or soft tooling can be a practical path.
When to Invest More
Higher-quality production tooling is usually worth it when:
- The annual volume is high
- The resin is abrasive or difficult
- Tolerances are tight
- The surface finish is important
- The product has assembly requirements
- Long mold life matters
The best mold is not the most expensive mold. It is the mold that fits the product, production volume and risk level.