📅 Amazon Offer Monitor

Dashboard link: https://app.emax-digital.com/amazon-offer-monitor-on-daily-basis

Overview

The Amazon Offer Monitor answers a deceptively simple but critical question for every Vendor Central brand: "On any given day, is Amazon actually offering my products — and does Amazon own the Buy Box?" When Amazon is not on the listing, your detail page is served exclusively by third-party sellers, which usually means lost vendor sales, weakened pricing control, and reduced advertising effectiveness. When Amazon is on the listing but does not hold the Buy Box, third-party sellers are taking the conversion at a price Amazon chose not to match.

This dashboard tracks both signals — offer presence and Buy Box ownership — at ASIN level, day by day, across the selected period. Two pie charts summarise how your catalogue is distributed across coverage tiers (from 0 % to 100 % of days covered), and a daily heatmap table lets you drill into individual ASINs to see exactly which days Amazon was offering and winning the Buy Box.

This is a daily monitoring tool: use it to catch coverage gaps early, identify chronic underperformers, and quantify the share of your catalogue that is at risk of being lost to third-party sellers.

What You Can See on This Dashboard

Section: Amazon Offer Coverage by # of ASINs

A pie chart showing how many of your catalogue ASINs fall into each offer coverage tier over the selected time range. Coverage measures how frequently Amazon itself appeared as a seller on the ASIN's detail page — calculated as the share of days within the period on which Amazon was present.

Coverage tiers:

0 % – 49.9 % — Amazon was present on fewer than half the days. These ASINs had little or no Amazon offer for most of the period.
50 % – 74.9 % — Amazon was present on between half and three-quarters of days. Coverage is inconsistent and may point to intermittent supply or pricing issues.
75 % – 99.9 % — Amazon was present on most days but with occasional gaps. Strong but not perfect coverage.
100 % — Amazon was present as a seller on every single day in the selected time range. Full, uninterrupted coverage.

Visualizations: A pie chart with one slice per tier, sized by the number of ASINs in that tier.

Section: Amazon Buy Box Coverage by # of ASINs

A pie chart with the same tier structure, but measuring Buy Box ownership rather than offer presence. This is a stricter measure: an ASIN can have Amazon offering it but losing the Buy Box to a third-party seller, in which case offer coverage looks fine but Buy Box coverage reveals the real problem.

Coverage tiers:

0 % – 49.9 % — Amazon won the Buy Box on fewer than half the days. Third-party sellers dominated for most of the period.
50 % – 74.9 % — Buy Box ownership is inconsistent, often a sign of active price competition with third-party sellers.
75 % – 99.9 % — Strong Buy Box coverage with minor interruptions worth monitoring.
100 % — Amazon won the Buy Box every single day in the selected time range.

Visualizations: A pie chart with one slice per tier, sized by the number of ASINs.

Section: Amazon Offer Monitor — Daily ASIN Heatmap

The core working table of the dashboard. One row per ASIN, one column per day in the selected period, plus summary columns for offer coverage and Buy Box coverage across the period.

Columns shown: ASIN · Detail Page Link · Product Title · Title · EAN · Category · Sub Category · Number of Days with Active Offer · % of Days With Active Offer · % of Days Amazon With Buy Box · one column per day in the period.

Daily status legend:

✅ — Amazon offered the ASIN and won the Buy Box.
✅🏷️ — Amazon offered the ASIN, won the Buy Box, and a deal badge was active.
☑️ — Amazon offered the ASIN but did not win the Buy Box (another seller held it).
☑️🏷️ — Amazon offered the ASIN but did not win the Buy Box, and a deal badge was active.
❌ — Amazon did not offer the ASIN on this day.
❌🏷️ — Amazon did not offer the ASIN, but a deal badge was active on this day.
(empty) — No data available for this day. The Buy Box or detail page may not have been accessible when the data was retrieved.

Important display limit: the heatmap is restricted to the top 250 ASINs by net received inventory value to stay within Cluvio's display limits. To analyse the full catalogue, use the Excel export link at the top of the dashboard.

Available Filters

Filter	What it does	Multi-select?	Default
Marketplace	Restrict the view to a specific Amazon marketplace (DE, UK, FR, IT, ES, NL, …)	No	—
Category	Restrict to one or more product categories	Yes	All categories
Subcategory	Restrict to one or more subcategories under the selected category	Yes	All subcategories
ASIN	Enter one or more specific ASINs to focus on	Yes	All ASINs
Tag	Filter by manually maintained product tags from the Catalog feature	Yes	All tags
Auto Tag	Filter by automatically assigned ASIN tags (e.g. lifecycle, focus segment)	Yes	All auto tags
Tracking in Catalog	Limit to ASINs that are actively tracked in your Catalog configuration	No	—
ASINs With Deal Tag	Limit results to ASINs that had (or did not have) an active deal badge in the period	No	—

Filter interaction notes

Subcategory depends on Category. Selecting one or more Categories narrows the Subcategory dropdown to only the values that belong to those Categories.
Marketplace identification of Amazon. For the Netherlands marketplace, Amazon is identified as amazon.nl. All other marketplaces use the generic amazon seller identifier. This is handled automatically — no user action required — but it explains small differences if you cross-check against raw seller-name data.
Deal Tag filter is a true/false filter that limits results to ASINs that did, or did not, have an active deal badge during the period. It does not change the underlying coverage calculation, only which ASINs are included.
All filters apply to both pie charts and the heatmap table simultaneously.

Use Cases

1 — Daily catalogue health check

Every morning, open the dashboard with Marketplace set to your primary market and the period set to the last 7 days.

Look at the Amazon Offer Coverage pie chart. What share of your ASINs is in the 100 % tier vs. the 0–49.9 % tier?
Compare to the Buy Box Coverage pie chart. If offer coverage is high but Buy Box coverage is much lower, third-party sellers are intercepting your conversions.
Drop into the heatmap and sort by % of Days With Active Offer ascending — the ASINs at the top are the highest-priority recovery candidates.

2 — Investigating a sales drop on a specific ASIN

Sales on an important ASIN have dropped over the past two weeks but the listing looks fine.

Enter the ASIN in the ASIN filter.
Read the daily row in the heatmap left-to-right. Is there a sequence of ❌ days (Amazon not offering) or ☑️ days (Amazon offering but losing the Buy Box)?
If you see ❌ days, the issue is likely a stock-out on Amazon's side — cross-check with your PO and Vendor Confirmation data.
If you see ☑️ days, a third-party seller is winning the Buy Box — check pricing and seller activity.

3 — Pre- and post-deal coverage check

You ran a Prime Day or Lightning Deal and want to verify Amazon's coverage during the promotion.

Set the period to span the deal window plus a few days before and after.
Use the ASINs With Deal Tag filter to isolate ASINs that ran a deal.
Scan the heatmap for 🏷️ markers — these confirm the deal badge was live on those days.
Watch for ❌🏷️ entries: a deal was active but Amazon was not offering the ASIN, which usually means the deal ran without inventory and most of the demand was lost.

4 — Identifying chronic Buy Box losers

You want to find the ASINs where Amazon is structurally losing the Buy Box to third-party sellers.

Set the period to the last 30 days (long enough for stable patterns).
In the heatmap, sort by % of Days Amazon With Buy Box ascending.
The ASINs at the top with high % of Days With Active Offer but low % of Days Amazon With Buy Box are your target list — Amazon is on the listing but losing the box, which usually means price-matching or seller competition. Escalate to your vendor manager or review your pricing strategy.

5 — Full-catalogue export for ad-hoc analysis

The 250-ASIN heatmap display limit isn't enough for a portfolio-wide review.

Set marketplace and date range as required.
Use the download to Excel link at the top of the report to pull the full ASIN list, then run pivots in Excel to summarise coverage by brand, category, or any custom dimension.

Limitations & Notes

Heatmap is capped at the top 250 ASINs by net received inventory value. For full-catalogue analysis, use the Excel export. The pie charts at the top are not subject to this cap and reflect all ASINs that match your filters.
Daily snapshots, not continuous tracking. Offer presence and Buy Box ownership are measured once per day per ASIN. Very short-lived Buy Box changes within a day may not be captured.
Empty cells = no data, not "no offer." A blank cell in the heatmap means the detail page or Buy Box could not be read on that day (temporarily inactive detail page, API issue, etc.). Treat empty differently from ❌ when interpreting trends. If data gaps look systematic, please report them via the bug report page.
Amazon seller identification. Amazon is identified as amazon.nl on the Netherlands marketplace and as amazon on all others. This is consistent with how Amazon itself surfaces seller information; in rare regional edge cases other Amazon-owned identifiers may not be captured.
Deal badge accuracy. The 🏷️ marker reflects whether a deal badge was detected on the day the snapshot was taken. Deals that started and ended between two snapshots can be missed.
Vendor Central only. This dashboard is built for 1P brands and tracks whether Amazon (as a seller) is present and winning the Buy Box. It is not designed for pure Seller Central (3P) accounts.
No revenue or unit data. This is a coverage dashboard — it tells you presence and Buy Box status, not how much was sold. Pair it with the Vendor Business Summary or Sales dashboards to quantify the revenue impact of coverage gaps.

Data Refresh

Data updates daily. New snapshots for the previous day are typically available the following morning.