Digital Printing vs Offset vs Flexo: The Cost Scissors Curve of 3 Printing Methods (Based on 6 Real Order Cases)

In early 2025, I conducted a cost analysis on 6 packaging orders. Each order had 3 printing factories quoting prices for 3 different processes: digital printing, offset printing, and flexographic printing.

The 6 orders shared the same dimensions, materials, and color counts (standard A5 gift box 21×14×4 cm, greyboard mounted with coated paper, four-color process plus 1 spot color), with the only variable being the order quantity: 100 units / 500 units / 1,000 units / 3,000 units / 10,000 units / 50,000 units.

When the cost data from these 6 orders is plotted as a scissors-difference curve (described in text), you will find that the plain conclusion that "small batches favor digital printing, large batches favor offset printing" is only half right. The real situation is far more complex than that.

Cost Structure Differences Among the 3 Processes

First, let's break down the costs of the 3 processes:

Digital Printing — electronic files are output directly to the substrate. Fixed costs are nearly zero (no printing plates), while variable costs mainly consist of paper + ink + equipment depreciation + labor.

Offset Printing — traditional PS plate printing, requiring plate making, baking, and on-press setup. Fixed costs are mainly plate fees (calculated by the number of colors) + equipment setup, while variable costs are mainly paper + ink.

Flexographic Printing — flexo printing, commonly used for corrugated boxes and flexible packaging. Fixed costs fall between digital and offset printing, while variable costs are the lowest among the 3 (suitable for large-volume production).

Cost Data from 6 Real Orders

The following are actual quotes for 6 orders across 3 processes (RMB/unit, 2025 market reference):

Order 1: 100 units

Digital: 4.5 RMB/unit (no plate cost)

Offset: 6.8 RMB/unit (plate cost amortized 2.5 RMB)

Flexo: 8.2 RMB/unit (plate cost + setup cost)

Conclusion: Digital wins.

Order 2: 500 units

Digital: 3.8 RMB/unit

Offset: 3.6 RMB/unit (plate cost amortized 0.5 RMB)

Flexo: 5.4 RMB/unit (plate cost + setup cost)

Conclusion: Offset surpasses digital for the first time, but the advantage is small (0.2 RMB difference).

Order 3: 1000 units

Digital: 3.4 RMB/unit

Offset: 2.9 RMB/unit (plate cost amortized 0.25 RMB)

Flexo: 3.5 RMB/unit

Conclusion: Offset's advantage expands.

Order 4: 3000 units

Digital: 3.2 RMB/unit

Offset: 2.4 RMB/unit (plate cost amortized 0.08 RMB)

Flexo: 2.6 RMB/unit

Conclusion: Offset's advantage is clear, flexo approaches offset.

Order 5: 10000 units

Digital: 3.1 RMB/unit

Offset: 2.05 RMB/unit (plate cost amortized 0.025 RMB)

Flexo: 1.95 RMB/unit

Conclusion: Flexo surpasses offset for the first time.

Order 6: 50000 units

Digital: 3.05 RMB/unit

Offset: 1.85 RMB/unit (plate cost amortized 0.005 RMB)

Flexo: 1.45 RMB/unit

Conclusion: Flexo leads by a wide margin.

Scissors Curve (Text Version)

Plot the cost data of 6 orders:

100 units: Digital 4.5 vs Offset 6.8 vs Flexo 8.2 (Digital is lowest)

500 units: Digital 3.8 vs Offset 3.6 vs Flexo 5.4 (Offset first approaches Digital)

1,000 units: Digital 3.4 vs Offset 2.9 vs Flexo 3.5 (Offset clearly leads)

3,000 units: Digital 3.2 vs Offset 2.4 vs Flexo 2.6 (Offset continues to lead)

10,000 units: Digital 3.1 vs Offset 2.05 vs Flexo 1.95 (Flexo takes over)

50,000 units: Digital 3.05 vs Offset 1.85 vs Flexo 1.45 (Flexo has absolute advantage)

The three curves' intersection points:

Digital → Offset intersection: approximately 600 units (between order 1 and order 2).

Offset → Flexo intersection: approximately 8,000 units (between order 4 and order 5).

Flexo's advantage continues to expand as volume grows, reaching 22% lower than Offset at 50,000 units.

The Hidden Variables Behind These Numbers

The numbers in the scissor-curve chart are not complex in themselves, but there are 7 hidden variables that affect actual costs:

Variable 1: Number of colors — The case above uses 4 colors + 1 spot color. If it were 6 colors + 2 spot colors, offset plate-making fees would rise to 1,500-2,000 yuan, and the crossover point would be pushed back to around 1,000 units.

Variable 2: Size — An A5 gift box has 70% equipment format utilization. For a large-format (A3) gift box, utilization rises to 90%, and offset costs drop by 10-15%.

Variable 3: Material — Coated paper is digital-friendly (a mainstream substrate for HP Indigo). With art paper or textured paper, digital color reproduction is compromised, and you may need to switch to offset.

Variable 4: Surface finishing — Processes such as hot stamping, UV, and embossing are more stable on offset and flexo presses ("digital hot stamping" used in digital printing has limitations).

Variable 5: Lead time — Offset printing requires 3-5 days for plate-making and baking. Urgent orders (shipment within 5 days) can only be handled digitally.

Variable 6: Spot color control — Brand spot colors (such as Coca-Cola red and Tiffany blue) are more stable in offset printing. Digital ΔE may reach 2-3, while offset ΔE stays within 1.5.

Variable 7: Variable data — Variable data such as serial numbers, QR codes, and personalized names can only be produced digitally or via a flexo + digital hybrid; offset printing cannot handle them.

Things Not to Do

After covering the positives, here are 5 "things not to do":

Don't look at the unit price alone. Some factories quote "offset printing at 2 yuan per piece," but don't include plate-making fees; others quote "digital printing at 3 yuan per piece," but don't include setup fees. Always look at the total quotation.

Don't blindly believe that "offset printing is more cost-effective for large volumes." If the order is 8,000 pieces, offset printing at 2.05 yuan vs. flexographic printing at 1.95 yuan — the cost is nearly the same; however, flexographic printing has more production capacity constraints, so the actual delivery may be delayed.

Don't combine variable data and bulk printing cost calculations. When half of the same order is fixed and half is variable, you need "offset + digital hybrid printing" — you can't simply choose between the two.

Don't ignore the waste rate. The waste rate for offset printing is 2-3%, digital 1-2%, and flexographic 1-1.5%. Waste rate impacts total cost by 1-3%.

Don't overlook proofing differences. The color difference between offset printing proofs (production proofs) and digital proofs is 5-10%; if the customer approves colors based on the digital proof, the production output will have color shifts.

A Real Customer Choice Case Study

At the end of 2024, a customer making high-end tea gifts needed 3,000 gift boxes. She initially chose a pure offset printing solution.

We ran a cost analysis for her:

Pure offset printing: 3,000 units × 2.4 RMB = 7,200 RMB

Offset main body + digital finishing: offset main body for 2,800 units + digital finishing for 200 units with variable QR codes = 7,200 + 400 = 7,600 RMB

She chose the latter. The reason: 200 of the gift boxes needed exclusive QR codes for VIP customers, which standard offset printing cannot do; digital printing can, but the minimum order quantity is too low (200 units in pure digital at 4.5 RMB/unit is too expensive). The hybrid solution offered the best value for money.

This is the real complexity of choosing a printing process—it is not "pick whichever is cheapest," but rather "which combination best fits all the parameters of this order."

If You Only Remember One Thing

"Quantity" is not the only variable in choosing a printing process. Number of colors, size, material, finishing, lead time, spot colors, variable data—these 7 variables together determine which process is the most cost-effective.

Before being swayed next time by a supplier quoting "offset printing at 2 RMB per piece," ask these 4 questions first:

1. Does it include plate-making fees?

2. Does it include proofing fees?

3. What is the lead time?

4. How are my variable data charges calculated?

Once you have clear answers to these 4 questions, you will know which quote is truly the cheapest.

Further Reading

• What is Digital Printing
• Differences Between Digital Printing and Traditional Printing
• Comparison of Label Printing Methods
• Factors Affecting Label Printing Pricing