How to read a price history
What the shape of a price chart tells you, what it leaves out, why the 90-day window matters, and how to tell a real floor from a one-day blip.
· 5-minute read · How pricing works
Is it actually a good deal right now?
Most "deals" are a discount off a number nobody paid. We track prices at U.S. retailers, test whether the crossed-out price was ever the real one, and give every product a commission-blind verdict: Buy now, Good deal, Wait, or Skip. When we cannot substantiate a claim, we do not make it.
Scoring uses weights v2.0.0, published in full on the methodology page. Anyone, anywhere, can use the site; the prices are U.S.-market prices in USD.
The catalogue is loading
This page is being populated from our pricing service and will fill in within the hour. Prices, verdicts and price history appear only once they are verified against our own observations.
Price tracking in progress
We track the 300 products in our catalogue. We have not recorded a price yet, so this page shows none: our first two retailer data sources, the eBay Browse API and the Best Buy Developer API, are still in application review, and observation starts the day each one is authorised.
What has to be true before this page prints a number:
- A price appears only with the timestamp we observed it at. We never carry a number forward from an earlier reading to keep a page looking full.
- A verdict needs at least 30 observations spanning at least 14 days of history for that exact product, so verdicts arrive about two weeks behind the first price.
- A crossed-out "was" price is shown as a discount only when that price was the prevailing one for at least 30% of the last 90 days in our own observations. Otherwise it is labelled the retailer's list price.
- Nothing here is estimated, modelled, or filled in to look complete. An empty field means we have not measured it yet.
Read this before you buy anything
All guidesBylined, reviewed before publishing, and useful whether or not you ever click one of our links. The explainers cover how discount pricing works; the buying guides cover what actually separates one product from another in a category.
How to spot a fake discount
Inflated list prices, permanent sales and pre-event markups: what U.S. law requires of a "was" price, and how to check one yourself.
· 6-minute read · How pricing works
The real price: membership, shipping, tax and card rewards
The gap between the listed price and what leaves your account, how memberships and store cards change the comparison, and why we show cashback portals that cost us revenue.
· 5-minute read · How pricing works
When prices actually drop
The U.S. retail calendar as it really behaves: which events move which categories, why tax-free weekends rarely help with electronics, and why a successor launch beats any sale.
· 6-minute read · How pricing works
What we track
300 real, currently sold U.S. products across six categories, chosen because they are the categories where a discount is worth checking: high ticket prices, long model cycles, and list prices that move. Each category has its own attribute schema, and those attributes — not a star rating — are what our comparisons weigh.
How a verdict is reached
We record first, judge second
A verdict needs at least 30 observations across at least 14 days of history for that exact product. Below that the page says "Early read" and explains what is missing, rather than guessing.
A "was" price has to be real
A former price counts as a discount only if it was the prevailing price for at least 30% of the last 90 days in our own observations. Otherwise we relabel it "Retailer's list price" and score the offer down.
Commission cannot move it
The scoring code cannot import the affiliate code; the boundary is enforced in CI. A test mutates every commission rate and cookie window, then asserts the scores, verdicts and ranking come out identical.
The full formula, the thresholds and the change log · How we make money · Editorial policy and corrections
Browse the catalogue
By category
By store
We track the retailers below whether or not they pay us. Several run no affiliate programme at all; they are here because leaving them out would make the price comparison wrong.