How to Track Price Drops on Any Product Page, Not Just Amazon

March 11, 20266 min read

Most price trackers only know a handful of big retailers. Paste in a link from a small perfume shop, a local electronics store or an airline, and they have nothing to offer.

This guide shows how to watch the price on any product page yourself and get an alert when it changes. It works on any public page that shows a price, in any currency and language.

Why "watch the whole page" doesn't work for prices

A product page changes constantly: new reviews, "you might also like" rows, stock counters, rotating banners. If a monitor compares the whole page, you get an alert every few hours and none of them are about the price.

The fix is to watch only the price. You point at the price once, and only changes to that element can reach you.

Set up a price drop alert with Site Spy

Step 1: Create a free account

Step 2: Add the product page

On the watches page, paste the product URL and press Find What to Watch. Site Spy loads the page in a real browser and shows you a picture of it.

If the product comes in sizes or colours, select the one you want first and copy the URL after that. The price can differ between variants, and many shops put the variant in the address.

Step 3: Point at the price

Click the price on the picture. If Site Spy finds a currency amount on the page, it offers a Price chip above the picture that selects it in one click. Check that the highlighted element is the price you care about, not a "was" price or a price per 100 ml, then press Track This Element.

You can do the same from the browser extension on the live page: click the Site Spy icon, then Pick an Element on This Page. Get it for Chrome or Firefox.

Step 4: Choose where alerts go and how often to check

Alerts can go by email, Telegram, browser push, or webhooks to Discord, Slack and 90+ other services. Every channel is included on every plan. Set them up on the notifications page.

Free: every hour. Enough for most prices, which rarely change more than once a day.
Starter (EUR 4 a month): every 10 minutes, for up to 25 products.
Pro (EUR 8 a month): every minute on up to 10 pages, for flash sales and lightning deals. Pro also adds screenshots and visual diffs, and AI summaries such as "price dropped from EUR 49 to EUR 39".

See pricing.

Step 5: Read the alert

When the price changes, the alert links to a before-and-after diff showing the old price and the new one. Your dashboard keeps the history, so over a few weeks you can see how often a product goes on sale and how low it goes.

What people track

Perfume and cosmetics, where the same bottle can cost very different amounts at different shops and on different days
Amazon listings, including ones camelcamelcamel or Keepa don't cover in your country
Electronics at retailers without a price alert feature
Flights, hotels and rental cars, where the fare shown on a public results page moves daily
Software and SaaS pricing pages, to catch a competitor's price change
Sale pages: point at the product grid on a "Sale" category page and choose The whole list when Site Spy asks. You'll be told when items are added or removed.

Things to know before you rely on it

You are told about every price change, up or down. The standard watch follows the price element, so an increase alerts you too. The alert shows both numbers, so you can tell at a glance. If you only want drops below a target, see the developer note below.
Prices shown only after login (member prices, trade prices) aren't visible to Site Spy, which checks as a logged-out visitor. Login steps can be configured through the API on Pro, but there is no dashboard editor for them yet.
Location-based prices. Some shops change price or currency based on the visitor's country. Site Spy's checks come from its own servers, so the price it sees may differ from yours. Compare the first snapshot with what you see.
Bot protection. A few big retailers use anti-bot services that block automated checks. Site Spy moves to heavier fetch methods when blocked, but some sites still refuse. You'll see a "blocked" badge on the watch and get an email. It won't silently report no change.
Redesigns. If the shop redesigns the page and the price element disappears, the watch reports a broken filter and emails you, instead of quietly watching the whole page. Point at the price again and it carries on.
Alerts are capped at 4 an hour and 24 a day per watch.

For developers: price thresholds

If a shop publishes structured product data, which most big shops do, Site Spy has a price and stock mode that reads the price from that data. It can ignore moves smaller than a percentage, or only alert when the price falls below a number you set. It's configured through the API: create the watch with processor: restock_diff and set price_change_min (alert below this price) or price_change_threshold_percent in processor_config_restock_diff. There is no dashboard switch for it yet.

Why not a dedicated price tracker?

If you only buy on Amazon, camelcamelcamel and Keepa are good and show long price histories. Site Spy is for everything else: the shops those tools don't cover, prices they don't track (a particular seller, a particular variant), and non-shop pages such as fares and pricing pages. Many people use both.

FAQ

Can I track prices on any website?

Any public page that shows the price in the page. It doesn't matter which shop, country or currency it is. Pages that need a login, or sites that block automated visits, are the exceptions.

Is it free?

Yes, for 2 products checked every hour, with every alert channel. Paid plans start at EUR 4 a month for 25 products checked every 10 minutes.

Can I get an alert only when the price drops below a certain amount?

Through the API, yes: the price mode takes a "below price" target. In the dashboard, the watch alerts on any change to the price you picked.

How often are prices checked?

Every hour on Free, every 10 minutes on Starter, every minute on Pro for up to 10 pages.

Can I also know when an item is back in stock?

Yes. See back in stock alerts for any shop. It's the same setup, but you wait for the "Sold out" text to go away.

Related guides

Create a free account and set up your first price alert.