Fixed costs are the whole story
A packaging quote is made of costs that happen once per job and costs that happen once per unit. The unit price you are quoted is the second plus the first divided by the quantity, which is why the same carton can be quoted at wildly different prices.
The once-per-job costs are the die, the printing plates, the press make-ready, any foil or emboss tooling, and the proofing cycle. None of them care whether you order 500 cartons or 50,000. Spread across 500 units they dominate the price entirely. Spread across 50,000 they almost disappear.
The per-unit costs are board, ink, laminate, the press time for each sheet, and any hand work. These fall much more gently with volume, mostly through better material purchasing.
What that looks like in practice
The shape of the curve matters more than any specific figure. Illustrating with a simple set of numbers, for a job with $600 of fixed setup and $0.22 of per-unit cost:
| Quantity | Setup per unit | Per-unit cost | Indicative total per unit |
|---|---|---|---|
| 500 | $1.20 | $0.22 | $1.42 |
| 1,000 | $0.60 | $0.22 | $0.82 |
| 5,000 | $0.12 | $0.22 | $0.34 |
| 20,000 | $0.03 | $0.21 | $0.24 |
| 100,000 | $0.006 | $0.19 | $0.20 |
Where the breakpoints actually sit
The steepest part of the curve is at the start. Going from 500 to 1,000 units roughly halves the setup contribution and is often the single largest percentage saving available. Going from 20,000 to 100,000 changes very little, because setup has already been absorbed.
This has a practical consequence: if you are ordering small quantities, a modest increase is disproportionately worthwhile. If you are already ordering in the tens of thousands, pushing volume further to chase a lower unit price mostly just moves cash into inventory.
The other breakpoint is the print process. Below roughly two thousand units, digital printing avoids plate charges entirely and the curve is much flatter. Above it, offset litho's lower per-unit cost takes over. A supplier quoting both at your quantity is telling you where you sit on that transition.
The specification moves the curve as much as quantity
Quantity is the largest single lever, but it is not the only one. Each of these shifts the whole curve upward: a heavier board, an extra spot colour, a laminate instead of a varnish, a foil pass, a spot UV pass, a window film patch, an insert, and any hand assembly.
Foil and emboss are worth singling out because they add both a fixed cost, the tooling, and a per-unit cost, the extra pass. They are therefore disproportionately expensive at low volumes and much more reasonable at high ones.
Three ways to get a better unit price without ordering more
Standardise across a range. Several products sharing one board, one ink set and one finish can be ganged onto shared press sheets, so they split the make-ready. On a multi-SKU launch this is frequently the biggest saving on the table.
Reorder against held tooling. Once a die is cut and a proof approved, a repeat order carries no die or proofing charge. Telling a supplier at quoting stage that you expect to reorder on a cycle changes how the tooling is quoted.
Use a scheduled call-off. Produce the full quantity in one run to hold the volume price, then take delivery against a schedule so you are not warehousing a year of stock at once. This is how most bulk programmes across a whole lip range are structured.
Reading a quote properly
Ask for pricing at your quantity and at the next volume break. That one request tells you where you are on the curve and whether a small increase would pay for itself.
Ask which costs are one-time. If a supplier separates setup from unit cost, you can see immediately what a reorder will cost and whether the specification or the volume is driving your price.
And treat any headline starting price as what it is: the figure for the simplest specification at the highest volume. It is a useful floor for comparison, not a quote.
