HomeGadgets Price Check
A browser extension for Chrome and Edge. Currently in beta.
Last updated: October 18, 2026. Describes version 0.4.1.
You are on a product page at a Canadian retailer. Click the extension, and it tells you the lowest price we have recorded for that same product, which retailer we recorded it at, and when we saw it. It does nothing at all until you click.
Beta. This is a beta and you use it at your own risk. It will sometimes fail to recognise a product, and it will sometimes show a price that has since changed. Treat what it says as a starting point and check the retailer before you buy.
How it works
• Open a product page at one of the Canadian retailers whose prices we hold, and click the toolbar icon. • The panel shows the lowest price we recorded for a new unit, the retailer, and the date we saw it. • If an open box or a returned unit is cheaper, it is shown separately and labelled, so a used price is never compared against a new one by accident. • Where we have the history, the panel also shows the lowest and highest price we recorded for a new unit over the last 90 days, on its own line. • Every button that takes you to a retailer is an ordinary link. Nothing happens until you click it.
What it does not do
• It does nothing until you click its icon. It does not run when a page loads, and it does not look at the pages you visit. • It asks for no access to any website. The browser lets it see only the one tab you clicked it on, and only after that click. • It does not pop up over the page, and it does not change the page you are on. The only thing it draws is its own panel. It does not put a number on its icon. • It does not touch a cart or a checkout. • It has no coupon feature, and it will not have one. • It has no search box, and it does not ask for your location, your province or your postal code.
Prices are records, not live quotes
Every price the panel shows is one we recorded at a point in time, and the panel always tells you when. We do not contact the retailer while you are looking at the panel, so we cannot tell you what anything costs at this moment. Taxes, delivery, installation and fees are not included unless the panel says so. The price and terms on the retailer page are the ones that count.
Privacy: exactly what it sends
Nothing is read and nothing is sent until you click the toolbar icon. The extension has no access to any website on its own, so the browser itself will not let it read a page you have not clicked it on. When you click, the extension first checks the address of that tab against the list of retailer and brand sites we hold prices for. The list is inside the extension and the check happens on your device. If the site is not on the list, it stops there: nothing is read from the page and nothing is sent to anyone. If the site is on the list, the extension sends three things so we can work out which product it is: • the address of the page you clicked on; • the structured product data that page already publishes for search engines, such as the manufacturer part number and the barcode; • one short piece of text that looks like a model number, if the page displays one. That is the whole list, and it is enforced by an allow list in the code rather than by a promise. We use it to answer the request and do not keep it. If we recognise the product, the extension makes one more request: it asks us for the lowest and highest new price we recorded for that product over the last 90 days. That request carries our own identifier for the product and the extension version, and nothing else. From version 0.4.1 every request the extension makes names it as the extension with its version number (for example extension/0.4.1), so we can count its use apart from our website and API. It never sends the text of the page, anything you type, anything in a form or a cart, your cookies, your logins, or your browsing history. It never asks for your name or your email, so we do not have them. It has no location feature. Like any request on the internet, these reach us from your IP address. We do not store the address. We keep a short salted hash of it to enforce rate limits, which is pseudonymous rather than anonymous. We also count visits with a rotating, unlinkable key and store no IP address: a keyed hash of the IP address and browser user-agent under a secret that changes every month and is deleted a week after the month ends. On first run it generates a random number and stores it on your own device, so we can tell one person opening the panel twenty times from twenty people opening it once. It is not derived from anything about you and we hold nothing that could turn it back into a person. Removing the extension destroys it. We count five anonymous things: that you clicked the icon on a site we follow and whether we recognised the product, that you clicked through to a retailer and the price we were showing, that you clicked the "Check price on Amazon.ca" button (which opens our own product page, not an Amazon site), that we could not read a page and at which retailer, and that we recognised a product we do not carry. Each of these is the result of a click. None is sent when a page loads, and none is sent when you click on a site we do not follow. There is no setting in the extension to turn them off; to stop them, do not click the icon, or remove the extension, which also deletes the random number from your device. When you follow one of our links to a retailer, we record that click: which offer and retailer, the kind of browser in general terms, and the same short hash. Our use of the information this extension collects complies with the Chrome Web Store User Data Policy, including the Limited Use requirements. We use it only to provide and improve the one thing the extension does, which is to show you the lowest price we have recorded for the product you clicked on. This section has been corrected twice. Until October 5, 2026 it listed five things while the extension sent six, because the Amazon button was missing from the list. Version 0.4.0 changed the extension itself: it used to check every product page you opened on the retailer sites we follow, so it could show a number on its icon, and it no longer does that.
How we make money from it
We may earn a commission if you buy after following one of our links. It costs you nothing extra and it does not change the price you pay. It also does not change what we show you: the cheapest price we hold goes at the top whether or not it earns us anything, and the ranking is by price alone.
Getting it
The extension is not in the Chrome Web Store yet. While it is in beta it is installed by hand from the project files, which is a developer flow rather than a one-click install. If you would like to try it, use the contact form and we will send you the folder and the four steps.
See also our limitations and data honesty page, our site privacy policy, and the contact form.