How to Use Price History Tools to Avoid Overpaying Online
Quick Answer
Price history tools show how a product's listed price has changed over time, allowing buyers to verify whether a stated discount reflects a genuine price reduction. "Amazon price tracker" receives approximately 9,900 monthly searches. The two most established tools for Amazon are CamelCamelCamel (free) and Keepa (free for viewing price history charts; paid subscription for tracking alerts beyond 200 products). Google Shopping also shows price history graphs for products across multiple retailers.
Why Price History Matters
Online retailers change prices frequently. A product listed as "40% off" may have been at that discounted price for months, or the reference price may have been set artificially high before a sale. Price history tools show the recorded selling price over time, giving buyers a factual basis for evaluating a stated discount.
Under FTC guidelines, a "former price" used to frame a discount must reflect a price at which the item was genuinely offered for a substantial period. Price history tools show whether a stated former price is consistent with a product's actual pricing record.
Tools by Platform
| Tool | Platform | What It Shows | Cost |
|---|---|---|---|
| CamelCamelCamel (camelcamelcamel.com) | Amazon | Price history chart, highest and lowest recorded prices, email alerts | Free |
| Keepa (keepa.com) | Amazon | Detailed price history charts visible directly on Amazon product pages; price drop alerts | Free to view charts; paid plan for tracking alerts beyond 200 products |
| Google Shopping | Multiple retailers | Price history graph; current prices across sellers | Free |
| Capital One Shopping | Multiple retailers | Price comparisons and price history across retailers | Free browser extension |
How to Read a Price History Chart
A price history chart shows the listed selling price on the vertical axis and the date on the horizontal axis. Key patterns to identify:
Stable price with a recent drop: The price has been consistent for an extended period and recently decreased. This is consistent with a genuine discount.
Frequent fluctuations: The price changes often across a wide range. The current "sale" price may fall within the normal range of price variation.
Inflated reference price: The price was lower for an extended period, then increased shortly before a sale was applied. The stated discount percentage is calculated from the inflated price.
Seasonal patterns: Some products follow predictable seasonal pricing. Price history shows how current pricing compares to the same period in prior years.
How to Use CamelCamelCamel
CamelCamelCamel requires no account to view a product's price history.
- Go to camelcamelcamel.com
- Copy the Amazon product URL and paste it into the search bar, or search by product name
- The chart shows the price history from when the product was first tracked
- To set a price drop alert by email, create a free account and enter a target price
The "Camelizer" browser extension adds price history charts directly to Amazon product pages without leaving the site.
How to Use Google Shopping Price History
- Search the product name in Google
- Click the Shopping tab
- Select a product listing
- On the product detail page, look for the "Price history" section below the current price
Google Shopping's price history shows the tracked price over time and flags whether the current price is high, typical, or low relative to historical data.