Destination by destination: what changes when the address changes

The short version: The same parcel across four regions, holding weight and lane structure constant. Below is the working, the sample and the known error sources.

Freight is a step function, not a curve, and the four published lanes differ in where the steps fall as much as in their height. On a heavy (> 2 kg) parcel the US economy lane quotes $5.90–$9.40 at 1.5 kg.

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 economy: $5.90–$41.50 across the full weight range, median 19 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.

The declared figure sets two things at once: the duty the parcel attracts and the ceiling on any compensation if it is lost. They cannot be optimised separately, which is why the choice is a decision rather than an entry field.

Estimate error concentrates near thresholds. That is a property of the rules, not of the model: a step function produces large effects from small changes exactly at the step.

Declare accurately and keep the order record. A plausible figure with evidence survives a claim; a precise figure without evidence does not.

Transit is not one wait, it is eight. On the US economy lane the median from payment to doorstep is 19 days, and the p90 is 31. The gap between those two numbers is where every complaint lives.

The stages people plan around are not the stages that cost time. Clearance is fast in the median case; the seller-to-warehouse stage and the last mile together account for more than half the total.

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.

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

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.

Budget bands behave differently because fixed and variable costs swap places as the order grows. At $150 the fixed components dominate; at $900 the item mix does.

At the bottom rung, adding a fourth item often costs less than the freight you would pay to ship it separately. At the top rung, adding a fifteenth item can cost more than the item.

At $150

One seller, one parcel, no express. Consolidation has nothing to consolidate.

At $400

Consolidate, and confirm the declaration before paying freight.

At $900

Plan two parcels from the start rather than discovering the tier boundary.

A parcel changes hands eight times between payment and doorstep. Each handoff has an owner, a typical duration and a failure mode, and knowing which is which is what turns a support ticket into a specific question.

The two highest-leverage interventions sit at opposite ends of the chain: a 72-hour rule on the seller, and an address check before the freight payment.

1. Set a 72-hour rule at the seller handoff and act on it.
2. Write the QC verdict down before looking at the next photo set.
3. Submit consolidation before packing, not after.
4. Confirm the destination address before paying freight.

A return carries three charges: the outbound freight is not refunded, the return freight is quoted separately, and the domestic leg back to the seller is usually yours. On a cheap item the round trip can exceed half the item value.

Compare the round-trip freight against the item value before opening a return. Below a 2:1 ratio the arithmetic rarely works in your favour.

• Check whether the defect is confirmed by the warehouse or only suspected.
• Check the return window — most run 7 to 14 days from delivery.
• Check whether the category accepts returns at all.
• Check whether the item is worth more than the round-trip freight.

Everything here traces to one of three sources and carries a collection date. Item prices are published figures read on 2026-10-05; freight and duty are modelled from published terms; transit figures are measured from order timestamps.

Where a figure was unavailable we record “Not measured”. That is a deliberate choice: an empty cell is more useful than a plausible one, because it tells you where the uncertainty actually is.

Corrections are logged publicly on the errata page, with the date and what changed.

Risk in this process is concentrated in three places: the declaration, the packing and the claim window. Each has a different probability and a very different cost when it goes wrong.

The cheapest mitigation is also the highest-value one: measure the packed parcel before paying freight. It addresses the most frequent risk at the lowest cost.

• 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.