How it works
You shop the way you always have. Sinclair does the checking you never had time for.
You look at a product
On any Amazon product page, Sinclair wakes up automatically. Nothing to click, nothing to sign into.
Sinclair reads the history
12 months of that product's real price record: what it actually sold for, not what the seller says it was worth.
One plain verdict appears
Right on the page, before you click buy. The evidence is there if you want to look deeper. The conclusion is there if you don't.
The four verdicts
Only four possible answers, each one deliberately simple. Two give you permission, one exposes the trick, one admits the limits.
The price is at or near this product's true low over its recorded history. Not "lower than the sticker," which any seller can arrange, but low against what it actually sold for.
The discount is manufactured: the reference price went up so today's price could look like a bargain against it. Invisible without price history, obvious with it.
This is roughly what the product usually costs. Not a warning; if you need it today, the normal price is a fair price. Just the truth, so you decide with accurate expectations.
A tool that always has an answer is guessing some of the time. Our standard is the opposite: every verdict backed by data, or no verdict at all. When we don't know, we say so.
GENUINE DEAL
Why a verdict instead of a chart
Price history charts have existed for years, and most shoppers never use them, because reading a chart at the moment of purchase is work. You came to buy headphones, not to interpret a graph.
A verdict is the chart's conclusion with the work already done. The evidence stays available for anyone who wants to look deeper. But nobody has to earn the truth by studying a graph; it's just there, in plain words, next to the price it describes.
The privacy promise
Sinclair reads the product page you are on. Nothing else. No browsing history, no tracking across sites, and the narrowest permissions Chrome allows for the job. Any future feature that learns your preferences requires your explicit approval first. We make money when members choose to pay for premium tools, never by selling data.
The verdict will always be free. Founding membership is limited to 500 people. Signing up is free, you pay nothing until we launch, and your rate locks at $8.97/month for life while later members pay the higher public rate.
Become a Founding Member