Price Tracking

Price tracking is the automated monitoring of a product's price over time, typically to alert users when prices drop below a target threshold. A price tracker polls price APIs periodically, stores the retrieved prices, compares them against previous values, and triggers notifications when a change is detected.

Building a price tracker requires: a product price API to retrieve current prices, a data store to record price history, a comparison engine to detect changes, and a notification system to alert users. Polling frequency depends on how quickly prices change in your target category.

Price tracking is one of the highest-value use cases for retail data APIs. Consumers consistently report that knowing a product's price history helps them decide when to buy. Products that appear discounted but have never sold for more are a common frustration that price tracking exposes.