Clamshell & Blister Packaging Costs Explained
Clamshells and blisters are the cheapest-looking packaging on the shelf — a thin sheet of formed plastic — which is exactly why their true cost surprises buyers. The plastic is cheap; the cavity tooling and the backer card are where the money goes. Here's how retail packaging prices in 2026.
What clamshell & blister packaging costs per unit in 2026
The base levers are size and order volume. Ranges below are our North American benchmark for standard formed clamshells, by size and quantity.
| Size | 500–4,999 units | 5,000–49,999 | 50,000+ |
|---|---|---|---|
| Small | $0.18–$0.42 | $0.12–$0.28 | $0.08–$0.18 |
| Medium | $0.30–$0.70 | $0.20–$0.48 | $0.13–$0.32 |
| Large | $0.55–$1.30 | $0.38–$0.90 | $0.25–$0.60 |
These are the formed-plastic ranges. Tooling and the card are extra.
Where the real cost lives
- Cavity tooling. A custom thermoform tool shaped to your product is a one-time cost amortized over the run. At low volume it dominates the per-unit price — see the math in our custom vs stock packaging guide. Stock or shared cavities sidestep it.
- Material. PET is the standard (recyclable #1); RPET adds recycled content; PETG adds clarity; PVC is legacy and best avoided. Recyclability guidance from the Association of Plastic Recyclers is worth checking if sustainability claims matter to your retailer.
- Backer card (blisters). A printed paperboard card is a second component with its own print cost. A "clamshell quote" without the card isn't comparable to a blister-on-card quote.
- Seal method. RF-welded and heat-sealed blisters cost more than a snap-shut clamshell, but deter tampering and theft.
- Film thickness. Heavier gauge (24–30 mil+) for big or heavy products costs more than 15–20 mil.
Retail brands most often overpay by tooling up custom cavities for volumes that don't justify them. Below break-even, a stock cavity plus a printed card delivers the same shelf presence for far less.
How to benchmark a clamshell quote
Enter your spec — style, material, thickness, backer card, quantity — into the free PackPricer benchmark for the verified market range in about 60 seconds.
If your quote feels high across the board, run the diagnostic in am I overpaying for packaging?
The bottom line
Formed clamshells run roughly $0.08–$1.30 per unit by size and volume, with cavity tooling and backer cards added on top. The plastic is rarely the problem — tooling and the card are. Benchmark the full spec, and don't tool up custom cavities below break-even.
Frequently asked questions
How much does clamshell packaging cost per unit?
Our North American benchmark data puts small clamshells at roughly $0.08–$0.42 per unit, medium at $0.13–$0.70, and large at $0.25–$1.30 — low end at 50,000+ units, high end at 500–4,999. Custom cavity tooling and printed backer cards add to these base ranges.
What's the difference between a clamshell and a blister pack?
A clamshell is a one- or two-piece folding plastic shell that fully encloses the product; a blister pack seals a formed plastic cavity to a printed paperboard backer card. Clamshells suit standalone retail; blisters suit peg-hung retail with branding on the card.
Why is custom clamshell tooling expensive?
Custom cavities require a thermoforming tool shaped to your product. That one-time cost is amortized across the run, so low volumes pay a steep per-unit tooling premium — which is why stock cavities or shared tooling are far cheaper for small orders.