How landed cost is actually computed, term by term

A worked two-item example where 2.4 kg on the scale bills at 7.32 kg because of the box. That figure is the reason this reading exists, and everything below traces back to the same 96-entry sample collected on 2026-10-05.

Which variable carries the weight

Sensitivity is unevenly distributed. Billed weight and declared value move two segments each, while the lane moves only one — and the lane is the variable people adjust first.

Billed weight moves freight, and only freight — but by a full band.
Declared value moves duty and the compensation ceiling together.
Item value moves the service fee, and only under a percentage model.
Lane moves freight and transit; it does not move duty at all.

Take a heavy (> 2 kg) parcel on US express at $14.80–$24.30 of freight. A packing change that removes 0.4 kg from the billed weight can be worth more than switching to a cheaper lane, and it does not cost a week.

Sensitivity ranked by effect on the total
Variable	Segments moved	Typical effect
Billed weight	Freight	One full tariff step
Declared value	Duty, ceiling	Up to $17.40
Lane	Freight, transit	$3–$9 plus 7–8 days
Item value	Service fee	1–3% of item value

Ranked from the census distributions; individual orders vary.

Packing is the variable nobody plans for

Volumetric weight is volume divided by a divisor, usually 5000. In the heavy (> 2 kg) band the packed dimensions typically decide the bill rather than the scale, which is why an estimate built from item weight alone is a lower bound rather than a quote.

Packing effect on billed weight, worked cases
Packed dimensions	Volume	Volumetric weight	Billed at
30 × 20 × 10 cm	6,000 cm³	1.20 kg	Scale weight if higher
38 × 28 × 22 cm	23,408 cm³	4.68 kg	Volumetric
44 × 32 × 26 cm	36,608 cm³	7.32 kg	Volumetric
52 × 38 × 34 cm	67,184 cm³	13.44 kg	Volumetric, two tiers up

Calculated at the 5000 divisor. Some carriers use 6000 or 4000, which changes the result by up to 20%.

Rehearsal exists precisely for this. It packs the parcel before the international payment so the freight can be quoted on the packed dimensions — and it is the stage where estimates most often change.

Ask for packed dimensions, not item dimensions.
Request compression where the category tolerates it.
Check the volumetric weight before paying, not after.
Remove one bulky item rather than changing lane when a parcel sits on a boundary.

How the six segments split

Most estimates fail because they treat the item price as the cost. Across the 96 entries we hold, the non-item segments on a accessories order run from $7.50 to $74.40 — a range wide enough to change the decision about whether to order at all.

The six segments, with their sample ranges
Segment	Range	What moves it
Item value	$12.52–$168.48	Catalogue mix
Domestic delivery	$0.40–$3.10	Weight band
Service fee	$1.20–$9.80	Fee model, order value
International freight	$14.80–$24.30 at heavy (> 2 kg)	Billed weight, lane
Duty	$0.00–$17.40	Declared value, destination
Insurance	$0.00–$2.60	Declared value; optional

Item value is a published figure read from the source listings. The other five are modelled ranges and are labelled as such wherever they appear.

The practical consequence is that optimising the item price is a different activity from optimising the order. A 10% cheaper item saves 10% of one segment; a packing change can move two bands of another.

Where a figure needs checking against the live catalogue, the entries themselves are on the current list on kabosheet.

Comparing all four published lanes

Lane choice looks like a speed decision and is really a step-function decision. For a heavy (> 2 kg) parcel, US express sits at $11.40–$17.20 at 1.5 kg, against $6.40–$10.80 on UK standard.

Lane cost and transit at 1.5 kg
Lane	Freight at 1.5 kg	Median days	p90 days
US economy	$5.90–$9.40	19	31
US express	$11.40–$17.20	11	21
UK standard	$6.40–$10.80	16	28
EU standard	$7.10–$11.90	21	36

Freight modelled from published tariffs; transit measured from stage timestamps in the sample.

The cost gap widens with weight while the time gap does not. At 1.5 kg the express premium is $5.50; at 8 kg it is $13.60, while the days saved fall from eight to seven. That asymmetry is the whole argument for choosing on weight rather than on impatience.

US express: $11.40–$78.40 across the full weight range, median 11 days.
Under 3 kg, express is usually worth it; above 5 kg it rarely is.
Above 9–10 kg the question becomes parcel count rather than lane.

Where the time goes

A US express order reaches the door in a median of 11 days and a p90 of 21. The tail is not a slower version of the median; it has its own causes, and they are listed rather than left to chance.

Stage durations on the reference lane
Stage	p10	Median	p90
Order to warehouse	2	3	6–8
QC and photo set	1	2	4–5
Packing	1	2	3–5
Export handling	2	3	6–8
Import clearance	1	2	6–9
Last mile	3–5	5–6	11–15

Measured from order timestamps in the 96-order sample. The last-mile stage carries the largest single share of the median total.

Last-mile delivery accounts for the largest single block — five of 11 median days. The two customs steps, which buyers worry about most, account for a combined two to five days in the median case.

Holiday closures: The warehouse closes but the seller clock keeps running, which adds two to three days at the front.
Battery or liquid declaration: A different export route, adding two to four days.
Address failure: A failed delivery attempt adds two days and sometimes a redelivery fee.
Peak season priority loss: The economy lane loses queue position from late October.

The six causes of a surprise invoice

Deviation between estimate and final invoice has six identifiable causes. Only one of them — random inspection — has no preventive action.

The six deviation causes, ranked
Cause	Median effect	Preventable
Packing volume	+$3.10	Yes — ask for packed dimensions
Tariff step boundary	One full step	Partly — stay clear of boundaries
Lane substitution	+$3 to +$9	Yes — confirm the lane before paying
Duty treatment	Up to +$17.40	Partly — declare accurately
Consolidation timing	Restarts a 1–2 day stage	Yes — request before packing
Currency settlement	±1–3%	Partly — settle in the quoted currency

Medians from the sample where a deviation was observed. Individual cases differ.

A well-run order deviates by under 5%. Beyond that, one of the six causes above is usually identifiable after the fact — which is the point of listing them rather than treating deviation as noise.

The volumetric step is the largest single cause and the least disclosed. If your estimate came without packed dimensions, it is a lower bound.

The words that get used interchangeably

Four terms carry most of the misunderstanding: billed weight is not scale weight, rehearsal is not QC, and consolidation is not packing.

Landed cost: Item plus domestic delivery plus service fee plus freight plus duty plus insurance. Six segments, not one.
Billed weight: The greater of scale weight and volumetric weight. What the tariff applies to.
Volumetric weight: Volume in cubic centimetres divided by a divisor, usually 5000.
Rehearsal: Packing the parcel before the international payment so freight can be quoted on packed dimensions.
Consolidation: Combining parcels from several sellers into one shipment. Not the same as packing.
QC: Photographs taken at the warehouse before shipping; a separate step from rehearsal.

The common misuses are predictable: “billed weight” used to mean scale weight, “consolidation” used for combining items from a single seller, and “landed cost” used for the item price plus freight alone.

Billed weight ≠ scale weight.
Consolidation ≠ packing.
Rehearsal ≠ QC.
Landed cost ≠ item price + freight.

Ownership at each handoff

Ownership is clear at seven of the eight handoffs. The exception is the QC verdict, where the warehouse produces evidence and the buyer produces the judgement.

Payment to seller: Agent owns the transaction; you own the accuracy of the buy request.
Seller to warehouse: Seller owns dispatch; agent owns follow-up.
Check-in: Warehouse owns registration; the storage clock starts here at some agents.
QC: Shared and therefore ambiguous — the only genuinely unowned step.
Packing: Warehouse owns dimensions; you own the consolidation instruction.
Export: Agent owns documentation; you own supplying complete details.
Clearance: Carrier owns the filing; you own the declaration.
Last mile: Carrier owns delivery; you own address accuracy.

The three longest tails sit at handoffs two, seven and eight. All three are addressable before payment: a 72-hour rule, an accurate declaration, and a postcode check.

Median and p90 at the three longest handoffs
Handoff	Median	p90	Tail cause
Seller to warehouse	3 days	8 days	Seller does not confirm
Import clearance	2 days	9 days	Random inspection
Last mile	5 days	15 days	Failed delivery attempt

From the 96-order sample.

Risk, ordered by expected cost

Three risks account for most of the money lost in our sample: an inaccurate declaration, an unmeasured packed dimension, and a claim window that closed before the parcel was opened.

Risk ranked by expected cost
Risk	Frequency in sample	Cost when it happens
Packed volume exceeds estimate	31 of 96	+$3.10 median, up to +$11.80
Declaration falls outside threshold	Uncommon	Up to +$17.40 duty
Claim window missed	Rare	Full declared value
Lane substituted without notice	Occasional	+$3 to +$9
Storage exceeds free window	Occasional	Charged in blocks

Frequencies from the sample; costs modelled from published terms.

Ranked by expected cost rather than by likelihood, the declaration sits first: it is uncommon and expensive, which is the worst combination for a risk you can address in a single field.

Measure packed dimensions before the freight payment, not after.
Declare accurately and keep the order record.
Photograph the parcel on the day it arrives, before opening it.
Note the claim deadline in a calendar on the delivery date.