Price Drop Alert Browser Extensions for UK Stores — Which One Actually Works?

Most price drop alert tools were built for the US market. They work brilliantly on Amazon.com, Walmart, and Target. If you shop at John Lewis, Currys, Argos, Next, River Island, or any of the hundreds of UK-specific retailers — most of them either do not work at all or give you incorrect prices.

This is an honest review of the main browser extensions that offer price drop alerts in the UK, tested against real UK stores.

What to look for in a UK price drop alert extension

Before comparing tools, here is what actually matters for UK shoppers:

• UK store coverage. Does it work on John Lewis, Currys, Argos, Next, Nike UK, Wayfair UK, River Island, Burton? Not just Amazon UK.
• Target price alerts. Can you set the price you want to pay and get notified only when it hits that number? Or does it just notify you of any price change regardless of whether it is a deal worth acting on?
• Email alerts. Does it send you an email when a price drops, or do you have to check the extension manually?
• Price history. Can you see how the price has changed over time so you know if a "sale" is actually a discount?

Market Arc

Market Arc is a UK-built browser extension that tracks prices across 120+ UK stores. It works on Amazon UK, John Lewis, Currys, Argos, Next, Nike UK, Wayfair UK, River Island, Burton, and more.

How it works: open any product page, click the Market Arc extension, and the product is tracked. You set a target price — the specific price you would actually pay — and Market Arc emails you the moment it drops to that level or below. You do not get notified of every minor fluctuation. You get notified when it hits your number.

Alerts arrive by email. No app to check. No browser to keep open. Market Arc monitors prices server-side every hour automatically.

Free plan: 3 products tracked, no time limit. Pro+ plan at £9.99/month for 25 products. Business plan at £49.99/month adds competitor tracking, webhooks, and API access.

Available on: Firefox, Edge, and Chrome.

Verdict: The strongest option for UK shoppers who want genuine set-and-forget price alerts across UK stores beyond Amazon.

Honey (PayPal)

Honey is the most widely known price tool, with over 17 million users. It does two things: automatically applies coupon codes at checkout, and tracks prices on wishlists.

UK coverage: partial. Honey works on Amazon UK and a selection of major retailers, but its store coverage is primarily US-focused. Many UK-specific stores either do not work or return incorrect results.

How alerts work: you add products to a Honey Droplist. Honey sends you an email when the price drops. There is no target price setting — it notifies you of any price movement regardless of whether it is meaningful.

The bigger issue for UK shoppers: Honey faced significant controversy in 2024 over its affiliate cookie practices — replacing creator affiliate links at checkout. For UK shoppers the practical impact is minimal, but it is worth knowing.

Verdict: Good for coupon codes. Weak for serious UK price tracking across non-Amazon stores.

Keepa

Keepa is the gold standard for Amazon price history. It overlays detailed price charts directly on Amazon product pages, showing months or years of pricing data so you can see whether a "deal" is genuine.

UK coverage: Amazon UK only. Keepa does not work on any other UK retailer.

How alerts work: set a price threshold on any Amazon product and Keepa notifies you by email when it hits that level. The alert system is reliable and well-tested.

Free tier is limited. The premium subscription at approximately £19/month unlocks full features.

Verdict: The best tool for Amazon UK specifically. Useless for any other UK store.

CamelCamelCamel

CamelCamelCamel is the longest-established Amazon price tracker, completely free and funded by affiliate commissions. It shows Amazon price history charts and sends email alerts when prices drop.

UK coverage: Amazon UK only via the dedicated camelcamelcamel.com/uk version.

How alerts work: create a free account, search for any Amazon product, set an alert price. Email arrives when it hits your target.

Limitations: Amazon only, website-based rather than a browser extension (the Camelizer extension just overlays charts on Amazon pages), no target price setting as intuitive as dedicated tools.

Verdict: Excellent free option for Amazon UK price history. No use outside Amazon.

The honest verdict

If you only shop on Amazon UK: CamelCamelCamel is free and does the job. Keepa is better if you want detailed data and are willing to pay.

If you shop across multiple UK stores — John Lewis, Currys, Argos, Next, Nike UK, Wayfair: Market Arc is the only extension that covers all of them reliably with genuine target price alerts and email notifications.

Honey sits in the middle — useful for coupons, weak for serious price tracking, primarily US-focused.

The UK retail landscape is different from the US. You deserve a price tracker that was built for it.