- Example scoring on a simulated history — the same math our live picks go through. How we pick deals
Your recent checks
Check prices with one tap, right from Amazon
Add the Ask Penny button to your bookmarks bar. Then on any Amazon product page, tap it — Penny grabs the price and the crossed-out price straight off the page and gives you the verdict. No copying, no typing.
(on a computer — press Cmd/Ctrl+Shift+B if the bar is hidden)
Then: open any product on Amazon → tap Ask Penny in your bookmarks → get the verdict. That's the whole thing.
Three steps. Ten seconds.
Paste the Amazon link of anything you're about to buy.
Type the price you see. Penny asks simple questions — no jargon.
Get the truth. Real deal, everyday price, or a fake discount — in plain words.
Questions people ask
How do I know if an Amazon discount is real?
Compare today's price to what the product usually sells for — not to the crossed-out "was" price. If a "50% off" tag is measured against a list price nobody ever paid, the real discount can be close to zero. That comparison is exactly what this checker does.
What does the 0–100 score mean?
It weighs the real discount, how rare a price this low is, and basic trust signals. Under 45: no real deal. 45–65: modest but genuine. 65+: a strong drop. Extreme discounts get a caution flag instead of a blind "buy."
Should I buy now or wait?
15–35% below the usual price is a genuine deal that may repeat. Past 35% is rare — if you were buying anyway, that's the moment. At or above the usual price, waiting costs you nothing.
Skip the math — we already ran it
Every pick on this site goes through this exact scoring before we list it. Browse today's picks, or read how to spot a fake Amazon discount in 10 seconds.