Divisor assumed rather than checked
A divisor of 5,000 rather than 6,000 raises the billed weight on the same box by a fifth. Checking the divisor for the specific line before booking is the highest-value five minutes in line selection.
Reviewed 2026-09-30 · quarterly cycle
YunExpress in a haul: what it does and where it breaks
Consolidated air lines are priced on a billing basis rather than on a rate card alone, and the billing basis is where the money is decided. The line bills the greater of actual weight and volumetric weight, computed with a published divisor. Two lines quoting the same headline rate per kilogram can produce materially different invoices on the same box, purely because their divisors differ.
That is why our volumetric tool asks for the divisor as an input rather than assuming one. A box measuring 42 by 30 by 20 centimetres is about 25 litres. At a divisor of 6,000 it bills near 4.2 kilograms; at 5,000 it bills at 5 kilograms. On a rate of a few dollars per kilogram the difference is small in absolute terms and large in proportion, and it applies to every parcel in a haul.
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Where it sits on the timeline
- Stage 1: payment not settled
- Stage 2: dispatch never happened
- Stage 3: QC window running out
- Stage 4: line queued behind a backlog
- Stage 5: documentation request
- Stage 6: released but not collected
- Stage 1 — Order and payment
- 0 to 1 days. Most common stall: payment not settled
- Stage 2 — Seller dispatch
- 1 to 5 days. Most common stall: dispatch never happened
- Stage 3 — Warehouse intake and QC
- 1 to 4 days. Most common stall: QC window running out
- Stage 4 — International leg
- 1 to 14 days. Most common stall: line queued behind a backlog
- Stage 5 — Clearance
- 1 to 8 days. Most common stall: documentation request
- Stage 6 — Last mile
- 1 to 6 days. Most common stall: released but not collected
Cost and rule lines
| Line | Range or basis | Basis stated |
|---|---|---|
| Billed weight basis | Greater of actual weight and volumetric weight, with a published divisor | Carrier-published billing basis. The divisor is the number to check, because it changes the bill more than the headline rate does. |
| Fuel and peak surcharges | Applied per kilogram, varies by period | Carrier-published surcharge schedule; peak-period surcharges are the reason two identical parcels a month apart can cost differently. |
| Handling on duty advance | Charged when the carrier advances duty or tax | Carrier-published handling fee; charged per parcel rather than per item, which is why splitting has a cost. |
Three failures and how they are handled
Peak surcharge discovered on the invoice
Surcharges are published but applied by period. Where a shipment is not urgent, moving it out of a peak window can save more than switching lines.
Duty advance handling misunderstood as duty
The handling fee is charged for advancing the tax, not for the tax itself. Buyers who dispute the fee as a duplicate charge spend time on the wrong question.
The second cost layer is surcharges, which are published but applied by period rather than stated at booking. Fuel surcharges move with the market and peak-period surcharges attach to calendar windows rather than to parcels. This is the mechanism behind a common experience: two identical parcels shipped a month apart cost different amounts with no change to the goods or the destination. For a non-urgent shipment, moving out of a peak window is frequently a larger saving than changing lines.
The third layer is handling on duty advances. When a carrier advances tax or duty to release a parcel, it charges a handling fee for doing so, and the fee is per parcel rather than per item. That structure has a direct consequence for splitting decisions: a split that reduces assessed value can still cost more overall once two handling fees are counted. Our duty tool returns a range for exactly this reason, rather than a single figure that would hide the split penalty.
What this line type does well is predictability on documentation. Consolidated air lines generally file the entry themselves and can supply the paperwork trail afterwards, which shortens the correspondence loop when a parcel is queried. For a first shipment to an unfamiliar destination, that property is worth more than a small rate difference.
What it combines with
Line-by-line: matching a parcel to a carrier instead of a habit