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Track price changes on a public web page

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There are three common ways to be told when a price drops: the store's own price alert, if it offers one; Google's price tracking, for products Google lists; or a page watcher that reads the product page itself on a schedule. A page watcher can be pointed at a public page the other two do not cover, and it shows the old and new price as evidence.

Three ways to get a price drop alert

  • The store's own alert. Some shops offer a price or wish-list alert on the product page. When it exists, it is the simplest option.
  • Google price tracking. Google's help pages say you can track a product's price on Google and get a push notification and an email when it drops below your target price. Google lists the feature as available in the United States, Canada, Australia, Japan and India.
  • A page watcher. A monitoring service reads the exact product page on a schedule and alerts you when the price you are watching changes.

How a Peekivo price watch is designed to work

  • The price is read as an amount with its currency, not as a piece of text.
  • You set a rule on that price, such as below $120. The rule is strict: with below $120, a price of exactly $120 does not notify you.
  • A rule compares prices only in the same currency. If the page serves the price in another currency, the rule does not count it as a drop.
  • When the rule matches, the alert shows the old and the new price side by side.

What can go wrong

  • Some prices are drawn by scripts after the page loads. Those pages need a full browser read rather than a plain one.
  • Many stores show different prices and currencies by country. A watch reads the version the store serves to it, which may not be the one you see.
  • Some stores block automated reads. Peekivo does not get around bot walls or CAPTCHAs; the watch reports the read as blocked.
  • A product page can show a list price and a sale price. Pick the price you mean, or the alert follows the wrong number.

Watching competitor prices

The same kind of watch works on a competitor's pricing page. Competitor monitoring covers that case, together with plans, changelogs and terms.

When another tool fits better

  • Amazon products: Amazon-focused trackers keep long price histories. Keepa, for example, describes itself as an Amazon price tracker.
  • Flights and hotels: fares change by search and date, and fare trackers on travel sites are built for that.
  • Products Google already lists: Google's own price tracking may be all you need.

Example sentences

Common questions

How do I set up price drop alerts?

First check whether the store offers its own alert. If it does not, use Google's price tracking when the product appears on Google, or point a page watcher at the product page, choose the price and set a rule such as below $120.

Can you set a price drop alert on Google?

Yes. Google's help pages say you can track a product's price on Google and get a push notification and an email when it drops below your target price. Google lists the feature as available in the United States, Canada, Australia, Japan and India.

Is there a way to be notified if something goes on sale?

Yes. Use the store's own alert where it exists, Google's price tracking for products it lists, or a page watcher on the product page with a rule on the sale price.

Is there a Chrome plugin that can track prices?

Chrome has price tracking built in: Google's Chrome help describes tracking product prices and getting price drop notifications for people in Australia, Canada, India, Japan and the US. Third-party extensions exist as well. Peekivo's browser extension is not available yet.

How do I set up a price tracker?

Pick the product page, decide which price you mean, list or sale, choose how you want to be told and set the rule. With a page watcher you also choose how often it reads the page, within what your plan allows.

Related pages

Sources

  1. About price tracking on Google, Google Shopping Help, fetched
  2. Shopping insights and price tracking in Chrome, Google Chrome Help, fetched
  3. Keepa - Amazon Price Tracker, fetched

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