Why Monitor Competitors
Understanding what your competitors charge — and how their pricing changes over time — helps you make better pricing decisions. If a competitor consistently prices at a certain level, you know the market rate. If they suddenly drop their price, you need to decide whether to respond or hold firm. Without monitoring, you are making pricing decisions in the dark.
Free Tools That Work
CamelCamelCamel tracks price history for every Amazon product and is completely free. Set up price alerts for products you sell and competing products you want to monitor. The Camelizer browser extension shows price history directly on Amazon product pages, giving you instant context about whether a competitor's current price is normal or unusual.
Keepa offers more detailed tracking including sales rank history alongside price. The free version provides basic charts, while the paid version offers more granular data. For casual monitoring, the free version is sufficient.
Manual Monitoring Methods
For a small number of key products, simple manual checking works. Create a bookmark folder with your most important competitor listings and check them weekly. Note the price, number of sellers, and Buy Box holder in a spreadsheet. Over time, this data reveals patterns — seasonal price shifts, competitor behaviour, and market trends.
Amazon's own Subscribe and Save feature sends you emails about price changes on products you are subscribed to. Subscribe to competitor products and you will receive notifications when their prices change.
Google Alerts and Notifications
Set up Google Alerts for your product keywords and competitor brand names. While this does not track Amazon prices directly, it alerts you to competitor promotions, new product launches, and market changes that might affect pricing in your category.
When to Invest in Paid Tools
If you sell more than fifty products or operate in highly competitive categories where prices change daily, free tools become insufficient. At that point, investing in a repricer with competitor monitoring (which handles both tracking and responding) or a dedicated price intelligence tool makes sense. The investment is justified when the time saved and the pricing decisions enabled generate more profit than the tool costs.
For most sellers starting out or operating with a smaller catalogue, free tools combined with consistent manual monitoring provide adequate competitor intelligence. The important thing is having a system — however simple — rather than no visibility at all.