Keepa Data Explained — A Beginner's Guide for EU Amazon Sellers

## Keepa charts confuse most new sellers. Once you read them right, you can spot a winning product in 30 seconds.

Most beginner guides to Keepa are written for US sellers, by US sellers, against amazon.com data. That leaves a gap. EU sellers spread across DE, FR, IT, ES and the UK have to interpret the same charts under different competitive dynamics, different currencies, and different VAT realities. This guide closes that gap. By the end, you should be able to look at a Keepa page for any EU marketplace and tell — without help — whether the product is a real opportunity or a trap.

No fluff, no marketing pitch in the middle of the explanation. The product mention is contained to one section near the end, clearly labelled.

## What is Keepa?

Keepa is a German company, founded in 2011, that quietly tracks Amazon's price and sales data minute by minute. It is the closest thing to a public memory of Amazon's pricing behaviour, and it has become the de facto data layer the rest of the seller-tools industry builds on top of.

Three things Keepa records, continuously, on every product page it tracks:

- **Price history** — what every active offer (Amazon, third-party FBA, third-party FBM, used) has cost over time.
- **Best Sellers Rank (BSR)** — the rank of the product within its category, refreshed roughly hourly.
- **Buy box history** — which seller is currently winning the "Add to Cart" button, and how often that flips.

If you have used Helium 10, Jungle Scout, AMZScout, SmartScout or AgentXray, you have already used Keepa data — most of those tools either license it directly or scrape and replicate the same series. Keepa is upstream of the entire research industry.

The free tier covers price-history charts for any product on any marketplace Keepa tracks. The paid tier (Keepa Pro — see [keepa.com](https://keepa.com) for current pricing in 2026) unlocks the BSR series, sales-rank tracking, the Product Finder, and the Deals firehose. The free tier is genuinely useful on its own, but most serious product research starts to need BSR.

For EU sellers the important detail is that Keepa was built EU-native from day one. All five major EU marketplaces — amazon.de, amazon.fr, amazon.it, amazon.es and amazon.co.uk — are first-class. The data quality on Germany is comparable to the US, and even the smaller marketplaces (Italy, Spain) are tracked properly. Compare that to US-built competitors, where amazon.com is the dataset and the EU marketplaces are an afterthought.

## Reading the price history chart

The price chart is the first thing you see on any Keepa page, and the easiest place for a new seller to misread the data.

The Y-axis is the price in the marketplace's local currency — EUR for DE, FR, IT and ES, GBP for the UK, USD on amazon.com. The X-axis is time, defaulting to the last 90 days but adjustable from a single day out to the full history of the product.

Keepa overlays several lines on the same chart, each one a different offer type:

- **Orange** — Amazon's own price (only when Amazon itself is the seller).
- **Black** — the lowest "New" third-party price across all FBA and FBM sellers.
- **Pink** — the lowest "Used" price.
- **Green dotted** — the lowest FBA-only price. We will come back to this one.

A healthy chart looks boring. The lines are stable, with small dips for promotions and short spikes when a competitor goes out of stock. Prices recover within days. Demand is steady and the market is rational.

An unhealthy chart looks like a heart-rate monitor. Prices spike to triple their normal value and stay there (someone went out of stock, the remaining sellers raised prices because they could). Or prices crater repeatedly (a new seller is dumping inventory, or a price war is grinding margins down). Or there is a slow downward drift over six months — that is market saturation. More sellers entered, the equilibrium price fell, and your margin window has closed before you even arrived.

The single most useful thing to look at is the **range**. If the line oscillates inside a narrow band, the market has a stable equilibrium price you can rely on for your unit economics. If it does not, your spreadsheet is lying to you.

## Reading the BSR chart — the most important data point

BSR (Best Sellers Rank) is the number that decides whether a product is worth selling. It is also the chart most beginners read wrong.

A BSR of 1 means the product is the best-selling item in its category. BSR is relative — a product at #50,000 in Toys & Games is selling far more than a product at #50,000 in Books, because the Books category has millions of titles and the Toys category has hundreds of thousands. **Absolute BSR numbers across categories tell you nothing.** Always compare within a category, and ideally within a sub-category.

The single concept worth internalising:

> A drop in BSR is approximately a sale. Counting drops over time is how you estimate real sales velocity, regardless of what the absolute number is.

If you see 30 sharp downward spikes in 30 days, the product made roughly 30 sales in that month — give or take, because Amazon batches updates. If the chart is flat with two drops in 90 days, the product made two sales in three months. The absolute BSR could be 100,000 in both cases; only the drop count tells you the truth.

The two most common BSR misreadings beginners make:

1. **"BSR went from 50,000 to 200,000 — the product is dying!"** Not necessarily. BSR is a relative ranking. If other products in the category started selling more, this one's rank gets worse without its actual sales velocity changing. Always cross-check against the price chart and drop count.

2. **"BSR is 1,500,000, this product is dead."** Depends on the category. In Books, 1.5M is normal mid-tail traffic. In Electronics, it means roughly one sale a week or less. The judgment is unintelligible without context.

Top-rank products refresh BSR multiple times per hour; deep mid-tail products refresh more slowly. That refresh rate is itself a signal — products that rank-update frequently are products that move.

## Buy box history and seller count

Two side-bar data points that decide whether you can actually compete.

The **buy box** is the "Add to Cart" button. Roughly 85% of all Amazon sales go through it, with the remaining 15% trickling out via the "Other Sellers" sidebar. If you do not win the buy box, you do not really sell. Keepa shows the buy box history as a coloured timeline: who held it, for how long, and how often it flipped.

A stable buy box dominated by one seller for weeks at a time means there is an entrenched competitor. A buy box that flips between three or four sellers every day means there is an active price war — possibly a margin race to the bottom, possibly a healthy stable rotation. A buy box held by Amazon itself almost permanently is the hardest case: third-party sellers cannot reliably compete with Amazon on its own listings.

The **seller count** sits next to the buy box info and tells you how many sellers offer the product right now. Low (1–3) means thin competition and probably stable margins. High (15+) means the market is saturated and you should not enter unless you have a structural advantage (better cost basis, better shipping economics, a brand registry).

For an EU seller, watching the seller count across DE / FR / IT specifically is useful: a product saturated on amazon.de may have only two sellers on amazon.it, where you can land and own the buy box for months while the German market sorts itself out.

## The "green dotted line" mystery

A specific point of confusion worth its own micro-section, because half the new-seller forum posts about Keepa are someone asking what this line means.

The green dotted line is the **lowest FBA-only price** on the listing. Most beginners ignore it because the solid black "New" line catches the eye first, but the green dotted line is more relevant if you are reselling FBA — which most EU sellers eventually are.

Here is how to use it. The black line includes both FBA and FBM (Fulfilled By Merchant) offers. FBM sellers can list at lower prices because they are not paying the FBA storage and handling fees, but they typically do not win the buy box. The green dotted line strips out FBM and shows only what the FBA market is doing.

If the green dotted line sits €3–5 above the black line consistently, that gap is the FBA premium customers will pay. That premium is your potential margin advantage as an FBA seller. If the green and black lines have converged or crossed, the FBA premium is gone — competition has erased it, and reselling is unlikely to be profitable.

## Top 5 mistakes new EU sellers make reading Keepa

The mistakes I see most often, in order of how badly they hurt:

1. **Looking at only the last 30 days.** Seasonality is real. A product looking strong in November might be a Q4 spike that dies in January. Always extend to at least one full year before committing inventory.

2. **Ignoring out-of-stock indicators.** Keepa shades the chart grey when a product is out of stock. Beginners read those gaps as "no sales" — they are actually "no inventory," which is a different problem and often a hidden opportunity (a product nobody can keep in stock is a product you can compete on by simply staying in stock).

3. **Confusing absolute BSR with sales velocity.** Drop count over 30 or 90 days is the right measure. Absolute BSR is decorative.

4. **Comparing across categories.** Books at BSR 50k is not Electronics at BSR 50k. Always compare within the same category, ideally the same sub-category.

5. **Trusting BSR without checking buy box stability.** A product can have great BSR drops and still be uneconomical for you if Amazon owns the buy box 95% of the time and lets third parties have the leftovers.

## How AgentXray reads Keepa for you

This is the only product mention in this guide. Read it as one section, not a sales pitch.

[AgentXray](https://agentxray.ai) ingests the same Keepa data described above and runs it through an AI verdict layer. Instead of you opening a chart and interpreting "BSR has dropped 12 times in 30 days, price has been stable for 90 days, three FBA sellers compete, no Amazon presence," AgentXray returns a `YES`, `NO`, or `MAYBE` for the product with one or two sentences of reasoning.

A typical AgentXray verdict looks like this:

> **B08N5WRWNW — YES.** BSR drops indicate roughly 8 sales/day, price has not dropped in 90 days, and only 2 FBA sellers compete. Estimated landed margin at €18.40/unit at current prices.

For EU sellers specifically, AgentXray runs the same analysis natively across DE, FR, IT, ES and the UK without making you toggle marketplaces. Most US-built tools require manual marketplace switching and produce uneven data quality outside amazon.com — AgentXray's data layer is built EU-first, the same way Keepa's is.

If you would rather skip the chart-reading and just get an answer, [try AgentXray free →](https://agentxray.ai/?utm_source=blog_keepa_explained&utm_content=inline_signup). Free tier, no card required.

## EU marketplace differences worth knowing

A few things that only matter if you are selling on the European Amazon network rather than amazon.com:

- **DE (Germany)** — the largest EU marketplace, the most competitive, and the densest BSR data. Quality buyers, but also the marketplace where return rates are highest in the EU. Most EU research starts here.
- **UK** — post-Brexit, amazon.co.uk is treated as a separate marketplace by Amazon and by Keepa. Data quality is good, GBP currency, but you cannot move inventory freely between UK and EU marketplaces — VAT and customs treat them as different jurisdictions.
- **FR** — meaningful volume, less competitive than DE for non-French listings (a German listing translated word-for-word into French often performs poorly; native French copy is a real moat).
- **IT and ES** — the thinner, less-saturated end of the EU map. Fewer sellers, fewer keyword tools that cover them well, and a frequent missed opportunity for sellers willing to translate properly. A product saturated on DE may be wide open in IT.

The practical move: when you find a product on amazon.de that looks saturated, click through to the IT or ES listing on Keepa and check the seller count there. You can often find the same product with one-third the competition on a smaller marketplace.

## Frequently asked questions

### Is Keepa free?

Yes for price history. The free tier shows the full price-history chart on any product page across all marketplaces Keepa tracks, including all five EU marketplaces, and is genuinely useful on its own. BSR (sales rank) data, the Product Finder, sales-rank deals, and the Keepa API require Keepa Pro — see keepa.com for current pricing.

### How accurate is Keepa BSR data?

It is sourced directly from Amazon, refreshed roughly hourly for active products and less often for deep mid-tail items. It is the most accurate BSR data available outside Amazon's own internal dashboards, and it is what most third-party seller tools use under the hood — meaning the BSR you see in Helium 10, Jungle Scout, AMZScout and AgentXray is fundamentally the same Keepa series, presented with different visualisations.

### Why does my Keepa chart look different from a competitor's?

Three common reasons. First, you might be on different marketplaces — amazon.de and amazon.com are separate datasets even for the same product. Second, you might be on different time ranges — the default is 90 days, but Keepa lets you extend out to the product's full history. Third, the BSR series only appears on the paid Keepa Pro tier; if you are on the free tier you only see price data, even if your competitor's screenshot includes BSR.

### Can I use Keepa for product research without buying a paid plan?

Yes for price-only analysis — you can validate that a product has a stable price, no big crashes, and a reasonable FBA premium. For BSR-based research (sales velocity, drop counting, sales-rank tracking) you need either Keepa Pro or a tool that includes Keepa Pro data in its workflow. Tools like AgentXray pull Keepa data into a research interface so you do not need a separate Keepa subscription on top of your seller-tools stack.

### What is the difference between Keepa Pro and the Keepa free tier?

Free: full price history charts on every product page, all marketplaces, indefinite history. Pro: BSR (sales rank) data, the Product Finder, deals notifications, advanced filters, and the Keepa data API for developers. Pro pricing changes periodically — check keepa.com for current 2026 pricing rather than trusting a number from a year-old guide.

### Is Keepa GDPR-compliant for EU sellers?

Keepa is a German company, headquartered in Germany, operating under EU data-protection law. Their data handling is GDPR-compliant by default — which is one of the structural reasons EU sellers tend to prefer Keepa-backed tooling over US-built scrapers that have to retrofit GDPR compliance.

## Wrap

Three things worth remembering from all of this:

1. **BSR drops, not absolute BSR, are the signal.** Count drops over 30 or 90 days to estimate real sales velocity.
2. **Read the chart over a full year.** Seasonality, out-of-stock periods, and price saturation only show up across long windows.
3. **For EU sellers, don't stop at amazon.de.** A saturated DE listing might be wide open on IT or ES, and Keepa lets you check in 60 seconds per marketplace.

Once these three habits are wired in, you can size up most products in under a minute.

If you would rather have an AI read Keepa for you and just tell you `YES` or `NO`, [start free with AgentXray →](https://agentxray.ai/?utm_source=blog_keepa_explained&utm_content=final_signup). Free tier, no card required, native across DE / FR / IT / ES / UK.

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**Read next:**

- [Keepa API: The Complete Guide for Amazon Sellers and Developers](/blog/keepa-api-guide) — the developer-side companion to this post.
- [AgentXray vs Helium 10 — EU Comparison](/compare/agentxray-vs-helium10) — how an EU-native tool compares to the dominant US suite.
- [How to Validate an Amazon Product Idea — A 5-Step Framework for EU Sellers](/blog/validate-amazon-product-idea-eu-markets) — the case-study companion: when to actually source a product after reading the chart.