Usecase Amazon

Historical Amazon example

This page is retained only to explain why Amazon scraping is not recommended. Amazon product markup, prices, availability, and anti-bot behavior change frequently, so old regular expressions for product prices or sales ranks are unreliable.

Use a documented product API or another stable data source instead. If you must scrape a page you are permitted to access, follow the Website grabber guide, build a fresh expression from the current response, and expect ongoing maintenance.