Priceglass compares your price with recent observations from other opted-in shoppers, making hidden differences visible.
The same booking page, twice. Flip the switch and watch what changes.
This demonstration uses example numbers. On live pages, the note only appears when another browsing context saw the same offer for less. Priceglass shows you whether your price is fair. It does not promise you can reach the other price, because that price belongs to someone else's context.
Retailers, airlines, and booking sites use what they know about you, your location, device, currency, and login, to decide which price to show you. Researchers and regulators call this surveillance pricing. From inside one browser it is invisible: you only ever see your own price.
No single shopper can see personalized pricing from the inside. A network can. Every person who installs Priceglass adds another vantage point, and every vantage point makes the picture sharper for everyone else.
The same toy set, checked minutes apart from two browsing contexts in different countries. A 15-franc difference on a single item.
The same hotel room, same dates, same occupancy. The price moved 50 francs between two checks minutes apart.
These are observations from our own testing, not marketing claims. A small number of checks shows that a difference existed. It does not prove why.
Priceglass reads the visible price and what the offer includes: dates, variant, currency, conditions.
Other opted-in shoppers saw the same offer under comparable conditions. Priceglass lines their prices up against yours.
A small note appears when someone saw a lower price. You see the evidence and one clear next step, or a plain statement that your price looks consistent.
Priceglass works only with your permission, and each permission is separate and reversible.
A lower price only helps when the offer is truly the same. Priceglass compares prices only when the product, dates, variant, currency, and conditions match.
Install Priceglass and find out. Every install helps the next shopper see clearly too.
Add to Chrome