How to Read an Amazon Price History Before Black Friday
Last reviewed 2026-11-14
Short version
Before you trust a Black Friday "deal", look at the price history. A price-history chart shows what an Amazon listing has actually cost over time, so you can tell a real low from a headline discount measured against an inflated "was" price. It takes about two minutes per product and it is free.
We do not quote prices on this site, and this guide does not either. It is a method: what to look at, what to write down, and how to turn it into a verdict with our free deal calculator.
What a price-history chart shows
Price trackers such as Keepa and CamelCamelCamel record the price of an Amazon listing over time and draw it as a line. Both let you look up a product by pasting its Amazon link or ASIN, and both offer price alerts. Features and limits change, so check what each currently offers rather than relying on a summary here.
On the chart, look for four things: - The lowest point. The lowest price the listing has reached, and when. This is the number to beat. - How often it hits that low. A product that dips to the same price every few weeks is not rare, so waiting costs you little. A product that hit its low once is a different story. - The typical price. The long flat stretches show what most people actually paid. - Spikes. A short jump up followed by a drop is a classic way to create a discount that looks bigger than it is.
How to spot a fake "was" price
The strikethrough price on a listing is not the same as what the product usually costs. Amazon shows a reference price, and it can be a list price that few people ever paid. Compare it to the chart: 1. If the "was" price appears nowhere on the chart, or only briefly, the percentage off is measured against a price almost nobody paid. 2. If the price rose shortly before the sale and then fell back, the discount is partly manufactured. 3. If the sale price matches where the line has sat for months, it is just the normal price with a label on it.
This is why our explainer on telling if an Amazon deal is actually good puts the lowest price you have seen ahead of the discount percentage.
90-day low versus list price
Two reference points matter, and they answer different questions: - Lowest price in the last 90 days tells you what a patient shopper could have paid recently. It is the most useful comparison for a Black Friday decision. - List price tells you what the manufacturer suggests. It is a weak benchmark, because many products rarely sell at it.
If a deal beats the 90-day low, that is a strong sign. If it only beats the list price, treat it as unproven until you have checked the chart. Use the longest history available too: a product can look cheap against 90 days and ordinary against a year.
Set an alert instead of refreshing
If the price is not low enough yet, do not keep checking by hand. Both tools let you set a target price and notify you, usually by email, when the listing reaches it. Pick a target at or just above the lowest point you saw on the chart. Alerts are most useful for the items on your list that you can wait for, and less useful for limited-time lightning deals, which can end before an email arrives. For how deal types differ, see our Black Friday and Cyber Monday 2026 calendar.
A worked checklist
Run this for any product you are about to buy. Use any currency, the same in every box. 1. Open the Amazon listing and note the current price and the "was" price shown. 2. Paste the link into your price tracker. 3. Write down the lowest price on the chart, and the date it happened. 4. Note whether that low happened more than once. 5. Note whether the "was" price ever appeared on the chart for any real length of time. 6. Add any coupon percentage shown on the listing. 7. Enter the current price, the "was" price, the lowest price and the coupon into the Is this deal good? calculator. It works out the real discount, your saving, and how close the price is to the lowest you have seen. Nothing you type leaves your browser. 8. Decide. If the calculator says good and the chart shows the low is rare, buy. If it says weak, set an alert and wait.
Limits to keep in mind
- A price history only covers the listing you looked up. A different seller, colour, size or bundle may have a different record.
- A history cannot tell you about a price that has not happened yet. A deal can beat every past price and still not be the best you will ever see.
- A low price on a product you do not need is not a saving. Check the specifications and what is in the box first.
- We have not tested these tracking tools ourselves. This guide describes how price-history charts work in general. Check each tool's own site for what it currently offers.
Where to go next
Planning your Black Friday shopping? Start with Black Friday and Cyber Monday 2026: where to start and the no-price prep checklist. When you have a product in mind, see today's deal pages, then run the numbers in the calculator.