Amazon Price Tracker vs Amazon Repricer: What's the Difference and Which Do You Need?
Last updated: September 2026
The most common point of confusion in Amazon seller tooling is between a price tracker and a repricer. The confusion is understandable , both tools involve prices. But they do completely different things, they solve different problems, and choosing the wrong one does not solve your actual problem at all.
The one-sentence version: a price tracker shows you what prices are. A repricer changes your prices in response to what they are.
TL;DR: CamelCamelCamel and Keepa are price trackers , they show historical Amazon price data and alert you to changes. They are excellent for research and cannot change your prices. Repricer.com is a repricer , it monitors competitor prices and automatically submits new prices to your Amazon listings in under 90 seconds. If you are an FBA seller competing with other sellers on shared listings, you need a repricer. Price trackers are complementary inputs (particularly Keepa for ceiling research) but are not substitutes for a repricer.
What is an Amazon price tracker?
An Amazon price tracker is a tool that monitors prices on Amazon over time and alerts you when prices reach a defined threshold. Price trackers show you what prices have been , they do not change your prices.
The two most widely used Amazon price trackers are CamelCamelCamel and Keepa:
CamelCamelCamel (camelcamelcamel.com): Free price tracking tool that shows historical Amazon price data and third-party seller prices for any ASIN. Sellers use it for pre-sourcing research , checking what a product's price history looks like before deciding to carry it. Buyers use it to set price drop alerts for products they want to purchase at a lower price. It does not connect to any seller's Amazon account and cannot change prices.
Keepa (keepa.com): More advanced price tracking tool with a free browser extension and paid API access. Tracks Amazon price, third-party seller prices, Best Seller Rank, review count, and availability over time , with historical data going back years. Sellers use Keepa extensively for ASIN research, identifying competitive dynamics, and understanding price ranges before setting their own pricing. The 90-day price chart is precisely the source for setting repricing ceilings. Like CamelCamelCamel, Keepa tracks prices only , it does not submit price changes to any seller's account.
Tools like these pull data across thousands of ASINs continuously, and that scale is the reason most of them run on residential proxies. Scraping at volume from a single IP gets flagged fast, so residential proxies spread requests across real household IP addresses to keep the data flowing without tripping Amazon's bot defenses.
Neither CamelCamelCamel nor Keepa is a repricer. Both are research tools that answer the question "what have prices been?" Neither answers the question "what should my price be right now?" and neither acts on the answer.
What is an Amazon repricer?
An Amazon repricer is software that connects to a seller's Amazon account, monitors competitive price events, and automatically submits new prices for the seller's listings in response to those events. A repricer changes your prices , it does not only show you what competitor prices are.
The workflow for a repricer:
A competing FBA seller on a shared listing changes their price
The repricer detects this event via Amazon's Selling Partner API (SP-API) within seconds
The repricer evaluates the event against the seller's configured rules (minimum price, maximum price, rule type)
The repricer calculates a new price within those rules
The repricer submits the new price to Amazon
The price goes live on the seller's listing
Repricer.com completes this cycle in under 90 seconds end-to-end , from competitive event detection to new price active on the listing. This speed matters because Amazon's Buy Box re-evaluates continuously, and a seller whose price is above the competitive range loses Buy Box allocation for the duration of the gap.
The key difference in one sentence
A price tracker is for research. A repricer is for competing.
A buyer uses CamelCamelCamel to know when to purchase. A seller uses Keepa to know what price range a product has sustained historically. Neither tool does anything about competitive events once the seller is live on a listing.
A repricer responds to competitive events automatically, maintaining competitive pricing 24 hours a day without manual monitoring. A seller who monitors prices via Keepa and manually adjusts in response is doing the same job as a repricer, with human latency and human availability constraints.
Who needs a price tracker (and not a repricer)
Price trackers serve specific purposes well. If your need falls into one of these categories, a price tracker is the right tool , and a repricer adds nothing to this use case.
Pre-sourcing research: A seller evaluating whether to source a new product uses Keepa to check the product's price history, BSR trend, and competitive offer count before committing. A repricer has no role in this decision , it operates on products you are already selling.
Ceiling research: A seller who already uses a repricer uses Keepa to determine the correct ceiling for a specific ASIN , the 90-day historical high at which the listing has sustained Buy Box activity. This is a research task, not a repricing task.
Private label sellers with no listing competition: A seller who is the only FBA seller on their own branded listing has no competitive events to respond to. A repricer has no function without competing offers. Keepa or CamelCamelCamel is sufficient for monitoring the listing's own price performance over time.
Brand owners monitoring MAP compliance: A brand tracking whether authorised resellers are honouring minimum advertised prices across multiple retail channels uses price tracking tools. A repricer operates only on the seller's own listings and does not monitor third-party seller compliance.
Who needs a repricer (and not only a price tracker)
Any FBA seller competing with other sellers on the same listing needs a repricer. Price tracking without repricing on a competitive listing is receiving information too late to act on effectively.
FBA sellers on competitive listings (2+ FBA sellers): When two or more FBA sellers are on the same listing, competitive pricing events fire continuously. A seller checking prices manually or via a price tracker dashboard is seeing a delayed representation of a market that has already moved on. A repricer responds to competitive events in under 90 seconds, not in hours.
Sellers with 20+ active repricing ASINs: At this catalogue size, manual price management requires significant daily time investment. A seller who spends 2 hours daily on manual price checking and updating is making 40+ hours per month of opportunity cost. A repricer handles this automatically.
Sellers losing Buy Box share without an obvious reason: If Buy Box win rate is lower than expected on competitive listings, the cause is frequently a pricing response lag , the seller's price rises above the competitive range during periods when the seller is not monitoring. A repricer eliminates this lag.
Book a Demo , see how Repricer.com's Amazon Repricer responds to competitive events in under 90 seconds, compared to the 5+ hour manual monitoring lag.
The tools compared: CamelCamelCamel, Keepa, and Repricer.com
When to use Keepa alongside Repricer.com:
Keepa and Repricer.com are complementary rather than competing tools. Use Keepa to set the ceiling in Repricer.com: pull the 90-day historical high from Keepa's price chart for each ASIN and enter it as the maximum price in Repricer.com. This gives the repricer the upper boundary it needs to capture above-competitive prices during thin-competition windows.
The latency problem: why tracking without acting costs money
On Amazon, the competitive event and the response must happen inside the same window for the response to matter. Price monitoring without automated repricing leaves a response gap measured in hours on a market that moves in seconds.
Consider a realistic example. A competitor drops their price at 9:15am. A seller using only a price tracking dashboard with a 4-hour refresh cycle sees this change at approximately 1pm. After review and manual price update at 2:30pm, approximately 5 hours have elapsed.
Put numbers on this. On a listing with 2,400 monthly sessions (approximately 80 daily), a 5-hour gap represents roughly 17 sessions during which the seller's price is above the competitive range. At 12% conversion and $8 average margin per unit: approximately $16 per event. If this pattern occurs twice per week, the annual impact on a single SKU is approximately $1,600 in missed margin , appearing nowhere as a line item, only as a lower-than-expected Buy Box share.
Multiply by the number of SKUs with similar competitive dynamics.
A repricer responding in under 90 seconds eliminates most of this gap. The 90-second response window versus the 5-hour manual gap is not a marginal improvement , it is the difference between participating in the competitive cycle and catching up to where it was hours ago.
The stock-out signal is the most valuable event that manual monitoring never catches:
When a competing seller sells out of stock, demand concentrates on remaining sellers and prices often rise to the listing's ceiling. This event most often occurs overnight or mid-day when sellers are not monitoring. A repricer detects this automatically and raises prices toward the ceiling , capturing above-normal prices during the supply constraint. A manual monitoring setup misses this entirely.
Using both: how price trackers and repricers work together
Price trackers and repricers are not alternatives. They are used at different stages of the seller workflow: price trackers for research and ceiling-setting, repricers for live competitive pricing execution.
The combined workflow:
Before sourcing: Use Keepa to research an ASIN's price history, BSR trend, and competitive offer count. Determine whether the product has sustainable pricing and what the historical price range has been.
Before listing: Use Keepa's 90-day price chart to identify the historical high at which the listing has held Buy Box activity. Set this as the ceiling in your repricer.
After listing goes live: The repricer takes over , monitoring competitive events and adjusting your price within the floor-ceiling band you configured. Keepa's historical data is no longer the relevant input. The repricer's live competitive data is.
Quarterly ceiling review: Return to Keepa to check whether the 90-day historical high has changed since you last set the ceiling. Seasonal shifts and competitive changes affect the ceiling over time.
This workflow uses each tool for what it does best. Keepa provides historical context that informs the repricer's configuration. The repricer handles live competitive execution.
Making the decision for your Amazon business
The decision is straightforward for most FBA sellers on competitive listings.
If you are selling products where other sellers have the same ASIN active, you need a repricer. The speed of competitive pricing events on Amazon makes manual monitoring commercially ineffective at any catalogue size above a handful of SKUs. A price tracker is not a substitute.
If you are in any of these specific situations, a price tracker alone is sufficient:
You are researching whether to source a product (not yet listed)
You are a private label seller with no competing FBA offers on your branded ASINs
You are a brand monitoring MAP compliance across retail channels
For everyone else: use Keepa for ASIN research and ceiling-setting, and use a repricer for live competitive pricing. The simple repricing setup guide covers how to configure a repricer from scratch using Keepa's historical high as the ceiling.
Before enabling any repricer, confirm your floor is correctly calculated from cost inputs. The 10-point repricing configuration audit identifies any configuration gaps before they affect live prices.
Key Takeaways
A price tracker shows you prices. A repricer changes your prices. CamelCamelCamel and Keepa are excellent trackers that cannot change your prices. Repricer.com is a repricer that changes your prices but does not show historical price charts.
The latency gap is the commercial cost of tracking without repricing. On a competitive listing with 80 daily sessions, a 5-hour manual monitoring lag costs approximately $1,600 per year per SKU in missed margin.
FBA sellers on competitive listings (2+ FBA sellers) need a repricer. Price trackers do not substitute for automated competitive response.
Keepa and Repricer.com are complementary, not competing. Use Keepa for ASIN research and ceiling-setting. Use Repricer.com for live competitive pricing execution.
The stock-out signal is the most valuable event. When a competitor sells out, prices rise. A repricer captures this automatically. Manual monitoring misses it almost entirely.
Action Plan
Confirm which category you are in: FBA seller with competing offers on shared listings → you need a repricer. Researching sourcing or private label seller with branded ASINs only → a price tracker is sufficient for your current needs.
If you need a repricer: Use Keepa to pull the 90-day price historical high for your top 5 ASINs. This is your ceiling for each ASIN.
Calculate your floor for each ASIN: (landed cost + FBA fee) ÷ (1 − referral fee rate − target margin rate).
Enable Safe Mode in Repricer.com for 7 days. Compare simulated average selling price to actual ASP. Enable live repricing when the simulation confirms better outcomes.
Check your first week: Monitor Featured Offer Percentage weekly for the first 30 days alongside average selling price. A rising win rate with declining ASP indicates a floor set too low.
Keep Keepa for quarterly ceiling updates and any future ASIN research.
Frequently Asked Questions
1. What is the difference between a price tracker and a repricer?
A price tracker monitors Amazon prices and shows you historical data. It cannot change your prices. CamelCamelCamel and Keepa are price trackers: they tell you what prices have been and alert you to changes, but require a human to act on that information. A repricer connects to your Amazon seller account via SP-API and automatically submits new prices in response to competitive events , it does not only report, it acts. On Amazon, where the Buy Box re-evaluates continuously, the difference between tracking and repricing is measured in how many competitive events a seller participates in versus misses.
2. Do I need a price tracker or a repricing tool for Amazon?
Most FBA sellers with competing offers on shared listings need a repricer. A price tracker alone is not sufficient because the response gap between seeing a price change and manually updating your price (typically 2 to 5 hours) leaves Buy Box share undefended during that period. A repricer is the correct tool for competitive pricing execution. A price tracker (particularly Keepa) is complementary , used for ASIN research and setting the ceiling in your repricer configuration, not as a substitute for the repricer itself.
3. Can I use CamelCamelCamel instead of a repricer?
No , CamelCamelCamel and a repricer are not substitutes. CamelCamelCamel tracks Amazon prices and provides email alerts when prices reach a target. It does not connect to your seller account, cannot change your prices, and has no mechanism to respond to competitive events automatically. It is designed for buyers tracking prices on products they want to purchase, and for sellers doing pre-sourcing research. If you are an active FBA seller competing with other sellers on shared listings, CamelCamelCamel does not solve your competitive pricing problem.
4. Is Keepa a repricer?
No. Keepa is a price tracking and product research tool. It provides historical Amazon price data, BSR trends, review count history, and availability signals , all of which are useful for ASIN research and for setting repricing ceilings. Keepa does not connect to your Amazon seller account for price submission, does not monitor competitive events in real time, and does not change your prices. It is an excellent complementary tool to use alongside a repricer , not a replacement for one.
Book a Demo , see Repricer.com's competitive event response in action and configure your first repricing rules using the ceiling from your Keepa research.
