Login and history
Amazon shows different prices to logged-in vs anonymous users. If you buy often and Amazon profiles you as a low-elasticity buyer, you tend to see slightly higher prices than a new visitor.
Full transparency
How Glitchoo works
Amazon uses dynamic pricing that shows different prices to different users. On this page we explain step by step how it works, why prices on Glitchoo may differ from what you see, and what we do to be as transparent as possible.
Why Amazon prices aren't fixed
When you load an Amazon product page, the displayed price isn't from a fixed catalogue. It's calculated in real time by an algorithm evaluating dozens of signals. The main ones:
Geographic location
City, region and IP affect pricing: zones with higher logistics costs or different spending power may see price variations.
Device and browser
Mobile vs desktop, Apple vs Android, browser used — yes, really. Amazon tests different prices to optimise conversions across segments.
Time and seasonality
Evening shopping, weekends, proximity to events like Black Friday: every hour can have its own pricing. Stock plays a big role too.
Continuous A/B tests
Amazon literally tries different prices on different users at the same moment. The same product can cost £16 to you and £17 to someone else simultaneously.
Personalised coupons
Amazon may show you auto-applied coupons or discounts based on your profile (cart abandoned, purchase frequency, Prime). Coupons others don't see.
💡 It's not a bug and it's not a scam: it's Amazon's business model. It's been like this since 2000 and is perfectly legal. The difference is usually £1-3, rarely more.
How Glitchoo monitors prices
We want to be honest: we don't show Amazon's personalised price, because we can't. We show the "anonymous baseline" — what Amazon serves to a fresh visitor with no profile, no login.
- Step1
Automated anonymous monitoring
Glitchoo periodically checks Amazon's public product pages just like any visitor would. No login, no cookies, no history — we see the "clean" default price shown to everyone.
- Step2
Verification and parsing
For each product we extract current price, RRP, discount, active coupons, rating, reviews. We save everything and keep history for 90 days.
- Step3
Price error detection
Our algorithm flags any drop greater than 60% vs historical average as a "price error". These land on the front page because they usually last hours.
- Step4
Trust Score 0-100
For each deal we compute a score combining discount magnitude, product quality, historical rarity and contextual bonuses.
What you can trust on Glitchoo
Directly verified prices
Every price is verified directly on Amazon's public page — never invented. If we say £16, Amazon is showing £16 to an anonymous visitor right now.
Transparent Trust Score
The algorithm is documented. You know exactly why a deal scores 78/100. No magic, no arbitrary "editor's picks".
Real price history
90-day price history is based on our actual observations, not third-party data. You see the true price over time.
Frequently Asked Questions
Why does Amazon show £17 while Glitchoo says £16?+
You're probably logged in/Prime and Amazon profiles you as less price-sensitive. Try opening the same product in incognito: you'll often see the "anonymous" price we show. Usually £1-3 difference.
Is the Glitchoo price what I'll actually pay?+
Probably yes, but we can't guarantee it because it depends on your Amazon profile. The shown price is what a fresh anonymous visitor would see.
What happens when a price error ends?+
Price errors typically last 1-6 hours. When they end, the product returns to its regular price. That's why we flag them immediately.
Why do I see different prices depending on the country?+
Amazon has separate catalogues per country. The same product can have completely different ASINs, prices and availability on amazon.it vs amazon.de.
Can I buy through Glitchoo?+
No, Glitchoo doesn't sell anything. We redirect you to official Amazon pages with our affiliate tag. You buy directly on Amazon.
Is Glitchoo affiliated with Amazon?+
We're enrolled in Amazon Associates (like thousands of others) but NOT sponsored or controlled by Amazon. Our mission: the best tool to find deals.
Ready to hunt deals?
You understand how we work. Now go explore today's price errors.
View price errors