Keepa Tutorial UK: How To Read Keepa Like A Pro In 2026

I run a £100K+/month Amazon UK FBA business. I open Keepa hundreds of times a week. If I had to pick a single tool to keep, this would be it — ahead of SellerAmp, ahead of even Seller Central. Most of what separates profitable sellers from unprofitable ones is whether they read the chart correctly.

This guide walks through what the lines actually mean, how to use them to validate a deal in under 60 seconds, and the two or three patterns that should make you walk away no matter how good the unit economics look.

Set up Keepa correctly first

Default Keepa is misleading. Before anything else:

1. Subscribe to Power User (€19/month). The free version hides Sales Rank history, which is the only line that actually matters for sourcing decisions.
2. Set your domain to amazon.co.uk in Keepa settings. UK data is what you need.
3. Enable these chart toggles: Amazon, New (3rd Party), Buy Box, Sales Rank, Offer Count, Out of Stock %.
4. Set chart range to 90 days as default. 30 days is too short to see patterns, 1 year is too noisy.

That's the baseline. Every chart I read uses this configuration.

The green line — sales rank, decoded

The green line is Sales Rank, also called Best Sellers Rank (BSR). It moves inversely to the actual rank number — a green line going down means the rank number is going down, which means the product moved up the bestsellers list, which means a sale happened.

Every sharp downward spike on the green line is (most likely) a sale. Some spikes are tiny — those are larger categories or single-unit movements. Big spikes in less-competitive categories are clearer.

What a healthy sales rank pattern looks like

You want to see consistent green-line activity throughout the chart, not bunched into a single spike from Black Friday or Prime Day. Sustained sales velocity beats one-off events. A product with 60 drops a month spread evenly is far better than 200 drops concentrated in one week.

What an unhealthy pattern looks like

If the green line is mostly flat with rare drops, the product doesn't sell. If the line plummets once and stays low, it had a viral moment that won't repeat. If the line is climbing steadily upward (rank getting worse over time), demand is dying.

The orange line — Amazon's selling price

The orange line is the Amazon-as-seller price. When orange is present and dominating the buy box, you don't want to compete — Amazon will undercut you and you'll never win the buy box at a profitable price.

Walk away if: Amazon has held the buy box consistently for 60+ days with stable pricing. Even great unit economics won't beat Amazon at their own listing.

Worth checking if: Amazon is intermittent — present some weeks, absent others. This often means stockouts, and your inventory can fill the gap when they're out.

The blue line — third-party new offers

This is the lowest "new" offer from third-party sellers (FBA or FBM). The price you'd realistically have to match. If the blue line trends downward, expect price erosion — by the time your stock arrives at FBA, the going price may be lower.

I price my SellerAmp ROI calculation to about 90% of the recent blue-line average, not the current price. This builds in a buffer for the inevitable race-to-the-bottom that happens when a hot deal gets shared.

The pink line — buy box price

This is the actual price the buy box was won at. Compare it to the blue line — if buy box (pink) is consistently higher than the lowest new offer (blue), that means buyers are paying a premium, often because the lowest seller has bad metrics or is FBM with slow shipping.

If pink and blue are basically identical, the lowest price wins. If pink is higher, FBA wins even when underpriced — good news for you.

Offer count — the competition signal

Set this toggle on. The grey line shows how many sellers are on the listing over time. Watch for spikes:

• Sudden jump from 3 to 30 sellers in a week → product was shared in a Discord or BSR-puller. Race to the bottom incoming. Walk away or buy a tiny test quantity.
• Steady offer count between 5–15 sellers → healthy competition, sustainable margins.
• Single seller for months → likely brand-restricted or IP-protected. Check before you invest.

OOS — the underrated signal

Out of Stock percentage is one of the most useful and least-used Keepa metrics. Toggle it on. The light-grey area shows when the buy box was unavailable.

If a product goes out of stock often (say, 20%+ of the time over 90 days), that's usually a sign of strong replenishable demand outpacing supply. If you can secure consistent stock — wholesale or repeat OA — you can clean up during the OOS gaps.

This is exactly how some of my best wholesale relationships started: I noticed brands going OOS on Amazon, contacted the brand owner directly, and offered to be a reliable FBA supplier.

The 60-second deal validation flow

Here's exactly what I do on every Keepa chart:

1. Sales rank drops in last 30 days — under 30? Skip.
2. Amazon-as-seller dominance — present consistently? Skip.
3. Blue-line trajectory — falling? Lower my expected sell price.
4. Offer count spike — recent jump? Skip or test small.
5. OOS frequency — high? Worth investigating supply.
6. Buy box stability — steady seller count? Healthy listing.
7. Final unit economics in SellerAmp — only after the above passes.

This takes 60 seconds with practice. You'll save thousands by saying no faster.

The patterns that should make you walk away

• The "Amazon dominance" pattern — Amazon as buy-box winner for the majority of recent history. Doesn't matter how good ROI looks.
• The "race to the bottom" pattern — sharp blue-line decline plus offer-count surge in the last 30 days.
• The "single seller fortress" pattern — one seller, no competition, suspiciously high price. Often means brand-restricted or trademark-enforced.
• The "viral one-hit" pattern — single rank spike followed by months of flatness. Already over.

Common Keepa mistakes UK sellers make

Looking at the wrong domain. The Amazon US chart is irrelevant for UK sourcing. Always check amazon.co.uk specifically.

Trusting the 30-day view in isolation. Always cross-check with the 90-day or 180-day view to spot seasonality.

Buying on stale data. A green-line drop from January doesn't help you in April. Recency matters more than total volume.

Ignoring offer count. A great-looking ROI evaporates the moment ten new sellers pile in.

Not setting Keepa to UK. I see this every week — sellers analysing US data and wondering why their UK shipments don't sell.

Want my full Keepa playbook?

The MethodFBA Operating System (£47) includes my exact Keepa configuration template, advanced filter recipes for Product Finder, and the brand-by-brand notes I keep on which categories Keepa data is most reliable for in the UK. See the Operating System →

Frequently asked questions

Do UK Amazon sellers need Keepa?

Yes — Keepa is non-negotiable for UK FBA. Free Keepa hides sales rank, which is the most important data point. The €19/month Power User plan pays for itself in the first deal you correctly avoid.

What does the green line on Keepa mean?

The green line is Sales Rank (BSR). It moves inversely to rank number — sharp drops downward indicate sales. Count drops over 30 days to estimate sales velocity.

How do I count Keepa sales rank drops?

Set the chart to 90 days, count meaningful downward spikes on the green line. Each is roughly one sale. SellerAmp and BuyBotPro automate this. Aim for 30+ monthly sales as a minimum threshold.

What is OOS analysis on Keepa?

Out Of Stock analysis means looking for periods when the buy box was unavailable, often shown as a light-grey area on the chart. Frequent OOS periods can signal a profitable replenishable product if you can secure consistent supply.

Can Keepa show me the Amazon UK buy box?

Yes — enable the Buy Box toggle in Keepa settings. The chart will show who held the buy box (Amazon, FBA seller, FBM seller) and at what price over time.