> ## Documentation Index
> Fetch the complete documentation index at: https://docs.vortexiq.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Cost Per Shipment Trend, Japan Post

> Cost Per Shipment Trend for Japan Post stores. Tracked live in Vortex IQ Nerve Centre. How to read it, why it matters, and how to act on it.

**Metrics type:** [Supporting Metrics](/nerve-centre/overview#metrics-types-explained)  •  **Category:** [Cost & Efficiency](/nerve-centre/connectors#connectors-by-type)

## At a glance

> A 90-day sparkline of your average rated cost per Japan Post consignment, so you can see whether unit despatch cost is drifting up, holding flat, or stepping at a tariff change. This is the slow-moving margin signal that sits underneath the daily noise of [Avg Shipping Cost](/nerve-centre/kpi-cards/japan-post/avg-shipping-cost).

## What it tracks

The card plots total Japan Post shipping spend divided by consignment count, sampled across the trailing 90 days. A smooth gentle slope usually reflects a shift in despatch mix (more EMS, more remote-prefecture Yu-Pack, heavier parcels); a sharp step almost always reflects a Japan Post tariff change, the annual Yu-Pack pricing review typically lands in March and can move whole prefecture-zone bands at once, and EMS rates are revised periodically too. Reading the trend over 90 days lets you separate a genuine cost-creep that needs a packaging or carrier-mix response from a one-month blip driven by a heavy-parcel promotion or a seasonal spike such as Oshogatsu (New Year) gifting. There is no alert on this card; it is a watch metric. For the spend geography behind the trend use [Cost by Zone](/nerve-centre/kpi-cards/japan-post/cost-by-zone), and for the individual parcels distorting an upward month use [High-Cost Shipment Outliers](/nerve-centre/kpi-cards/japan-post/high-cost-shipment-outliers).

## Reconciling against the source

Cross-check the trend against your monthly Japan Post billing statements and the rated charges in the Yu-Pack Print / EMS despatch records, aligning to the same tariff period (billing is in JST); a step in the line usually maps to a published Japan Post price revision rather than a data issue. See [Avg Shipping Cost](/nerve-centre/kpi-cards/japan-post/avg-shipping-cost) for the period-over-period point reading.

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### Tracked live in Vortex IQ Nerve Centre

*Cost Per Shipment Trend* is one of hundreds of KPI pulses Vortex IQ tracks across Japan Post and 70+ other ecommerce connectors. Nerve Centre runs the detection layer; Vortex Mind investigates the cause when something moves; Ask Viq lets you interrogate any number in plain English.

[Start for free](https://app.vortexiq.ai/login) or [book a demo](https://www.vortexiq.ai/contact-us) to see this metric running on your own data.