Keepa is an excellent Amazon price tracker, and the part most people want is free. It just does not cover eBay listings. Here is what does, and what you give up.
The direct answer: Keepa tracks Amazon. There is no eBay mode to switch on, no eBay trackers, and no eBay price history.
If you are buying on Amazon, use Keepa. Its price history charts and price-drop alerts are free. We do not do Amazon and we are not trying to.
If you are buying on eBay, FindersKeepers does the same job on that side: price history, alerts when something gets listed, and a read on whether a price looks good.
Where the confusion comes from: Keepa shows an "eBay new and used" reference price on some Amazon product pages. That is one comparison number sitting on an Amazon listing. It is not eBay tracking.
None of this is a knock. For Amazon, Keepa is the tool, and this page is not trying to talk you out of it.
Interactive charts on Amazon product pages going back years. That depth is the whole reason people trust it.
Price-drop and back-in-stock alerts are on the free tier. You do not need to pay to get the useful part.
The chart appears right on the Amazon page while you shop. We have no extension.
Product Finder, sales rank history, and Buy Box data sit behind a paid plan. Keepa changed its pricing in 2026, so check their site for the current figure.
The habit transfers. People who check a price chart before buying on Amazon want the same reflex on eBay, and go looking for the equivalent.
Keepa's own charts mention eBay. Seeing an "eBay new and used" line reads like eBay support, so people reasonably assume it is in there somewhere.
eBay itself shows no price history. The gap is real. eBay will tell you today's asking price and nothing about how it got there.
The need is real, Keepa does not fill it, and that is what this page is about.
Add an item to your watchlist and the price is recorded every six hours from that point on, so you can see whether it is drifting down or holding.
Saved searches are re-run every hour and you get an email when something new matches. This is the piece Amazon does not need, because Amazon products sit at a fixed page while eBay listings appear and vanish.
Each listing is compared against similar ones in the same results. Twenty percent or more below the average asking price is flagged as a hot deal, ten to twenty percent below as a good price. It needs at least five comparable listings first.
Listings under fifteen minutes old are marked hot, under an hour fresh, under a day new. On eBay, being early is most of the game.
| Feature | Keepa | FindersKeepers |
|---|---|---|
| Marketplace | Amazon | eBay US |
| Tracks eBay listings | ✕No | ✓Yes |
| Tracks Amazon listings | ✓Yes | ✕No |
| Price history charts | ✓YesYears of back catalogue | ✓YesFrom the day you add an item |
| Price-drop alerts | ✓YesFree tier | ✓YesChecked hourly |
| Alerts when a new listing appears | Not needed. Amazon products sit at one fixed page. | ✓YesHourly, on saved searches |
| Tells you if a price is a good deal | !IndirectYou read the chart and decide | ✓YesScored against similar asking prices |
| Browser extension | ✓Yes | ✕No |
| Public API | ✓YesPaid, separate from the subscription | ✕No |
| Collection tracking | ✕No | ✓Yes |
| Free to use | ✓YesCharts and alerts are free | ✓YesEverything, no paid plan |
| Paid tier exists | Yes, for seller research tools | No |
If you buy on both, use both. They do not overlap at any point.
No Amazon. None at all. Keepa is not replaceable here.
It searches eBay US only.
No back catalogue. Price history starts the day you add an item. There is no way to see what a listing did before you started tracking it.
Our deal score uses asking prices, meaning what comparable listings are currently listed at, not what they sold for.
No browser extension and no public API.
It does not bid, snipe, or check out. You still buy on eBay itself.
Not Keepa itself. For eBay, FindersKeepers does the equivalent job: price history on items you watch, hourly alerts on saved searches, and a read on whether a listing is priced under similar ones. It is free.
No. Keepa tracks Amazon. Some Amazon product pages show an "eBay new and used" reference price, but you cannot create an eBay tracker, view eBay price history, or receive eBay alerts from it.
There is no exact one-to-one match, and the reason is structural. Amazon has one product page per product, so history is easy. eBay is millions of individual listings from individual sellers, which is a different problem. FindersKeepers covers the buyer side of it on eBay US.
Yes, on items you add to your watchlist. FindersKeepers records the price every six hours from the day you add it. Be aware that nobody can show you eBay history from before you started tracking, so the sooner you add something the more useful the chart gets.
The price history charts and the price-drop alerts are free. Keepa also sells a paid plan for seller research tools like Product Finder and sales rank data. It changed pricing in 2026, so check their site rather than trusting a number in an article.
No. If you buy on Amazon, keep using it. This is not a replacement and it would be silly to pretend otherwise.
Only Keepa can answer that. The likely reason is structural rather than a lack of interest: Amazon's catalogue of fixed product pages and eBay's stream of one-off listings need different systems underneath.
Keepa graphs a decade of Amazon prices because Amazon keeps that history in one place. eBay does not, which is why nobody sells you the eBay version of that graph. What eBay price history actually exists, and where it comes from is the longer answer.
Price history, hourly alerts, and a read on whether a listing is priced well. No credit card, no eBay login.
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