Are unit costs going down?
№ 196 · Cost per unit trend
Definition
MetricFully loaded cost to produce, pick, pack and ship one unit, tracked over time
Unitcurrency per unit, plus % change year over year
Single line of operating cost divided by units delivered (orders, transactions, tickets). Pull from cost accounting monthly. Watch for spikes around volume changes. Trending down with scale = operating leverage working. Example: $4.20 Q1, $3.80 Q4 (10% improvement, batch size optimization).
Benchmarks
| Bottom 30% | Median | Top 30% |
|---|---|---|
| +10% year over year or worse, unit cost rising faster than the input indices | +4% to +7% year over year, roughly tracking carrier and warehouse input inflation | flat to -4% year over year in nominal cost per unit, which is a 5 to 10 point real reduction against input inflation |
DTC and ecommerce fulfilment operations on a US carrier and warehouse cost base, 2024 to 2026. One unit is one outbound order, all in: carrier charge, pick and pack labour, packaging, warehouse rent and depreciation. Absolute level lands at 6 to 17 USD per order depending on vertical, so the trend, not the level, is the comparable figure. · The main definitional trap is fulfilment versus shipping and handling. Fulfilment bundles warehouse rent, depreciation and pick-pack labour on top of the carrier charge; shipping and handling is usually carrier plus packaging only. That single choice moves the number by a factor of three or more, which is why absolute levels across published sources span 6 to 17 USD per order for broadly similar operations. The trend bands above are anchored on BLS producer price indices for couriers and warehousing, which are government series and reliable; the per-order absolute figures come from operator aggregators and are weaker. No Tier 1 publisher runs a sampled panel of cost per order, so treat the bands as directional.
Category split omitted: Only one publisher (Eightx, working from SEC filings and BLS series) provides a vertical split of cost per order on a consistent definition, so the two independent Tier 1-2 source test is not met.
When it looks bad
The line drifts upward with no step changes, and the gap to the carrier and warehouse input indices widens rather than narrows, meaning every efficiency programme is being absorbed and then overtaken.
Cost per order runs 9.10, 9.60, 10.30, 11.05 across four quarters, up 21%, while courier PPI rose 10.5% over the same window. Eleven points of the increase are self-inflicted.
What to do about it
- Run a dimensional weight audit and right-size the three highest volume cartons. Carriers bill the greater of actual and dim weight, so a correctly sized box drops billable weight by up to 30% on lightweight bulky items and the saving repeats on every parcel (Eightx, 2026).
- Commission a third party surcharge audit on twelve months of carrier invoices. UPS and FedEx run more than 50 surcharges that most shippers absorb silently, and an audit costing 2,000 to 5,000 USD typically recovers 4 to 8% of annual parcel spend (Eightx, 2026).
- Split the cost line into inbound freight and outbound parcel before setting any target. The two indices moved in opposite directions through 2023 and 2024, with truck freight deflating while courier never fell below +3.7%, so a blended line hides which half is actually inflating (BLS WPU3012 against WPU3016).
- Shift zone-concentrated volume to a regional carrier. Regional operators run 10 to 20% cheaper than the national carriers on in-region lanes and have closed most of the service gap, which makes it the highest return carrier change available to a shipper with regional density (Eightx, 2026).
Sources
- Eightx (from BLS and FRED series WPU3016) Courier PPI reached 225.7 in April 2026, up 10.5% year over year and up 54.2% since December 2019. Truck freight PPI (WPU3012) snapped to +15.2% year over year in April 2026 after running negative through 2023 and 2024. eightx.co ↗
- Eightx All-in DTC fulfilment cost per order lands at 10 to 17 USD by vertical in 2026. Warehousing PPI up 4.0% year over year, warehouse wages up 5.1% to 25.88 USD per hour. FedEx and UPS 2026 general rate increase 5.9% headline, 8 to 12% effective after surcharges. eightx.co ↗
- Opensend Average cost to fulfil an ecommerce order approximately 8.50 USD covering pick, pack, ship and handling. Storage charged at 0.45 to 0.75 USD per cubic foot per month. opensend.com ↗
- Opensend Average 7.96 USD to ship each order. Electronics highest at 10.60 USD per order but only 3.18% of revenue on higher order values; home and beauty lowest at 6.03 USD per order. USPS Priority Mail up 3.2% in January 2025. opensend.com ↗
- Council of Supply Chain Management Professionals and Kearney US business logistics costs rose 5.4% in 2024 to 2.58 trillion USD, or 8.8% of GDP, against a pre-pandemic band of 7.4% to 7.8%. Sets the macro floor under any unit cost reduction target. prnewswire.com ↗
- EcomCalcTools Average ecommerce fulfilment cost 6 to 12 USD per order. In-house 5 to 10 USD, 3PL 6 to 14 USD, Amazon FBA 7 to 15 USD. Fulfilment runs 8 to 15% of average order value, falling as order size rises. ecomcalctools.com ↗
- FreightAmigo Fulfilment costs average 10 to 15% of revenue for most online stores in 2025. Shipping fees are 50 to 60% of total fulfilment cost, warehouse labour and storage add 1 to 3 USD per order, packaging 0.50 to 2 USD per box. freightamigo.com ↗
- Warehousing Education and Research Council, reported by Hyster-Yale Reducing costs was the number one stated goal for warehouses and DCs in 2024, displacing the four customer-facing perfect-order metrics that led the 2023 ranking. Best-in-class annual workforce turnover under 5%, a direct driver of unit labour cost. scg-lm.s3.amazonaws.com ↗