There are a number of projects which allow for website monitoring, but I required a relatively customized one (for educational purposes). Specifically, I wanted to monitor the Apple.com refurbished section for iPhone 12 models and receive a push notification to my phone when it appears there. To achieve this, I employed the use of Make.com, ScrapeNinja, and ntfy and was able to get it running in around 30 minutes.
This solution should get you started with web scraping. For more information, please refer to my blog post at Low Code Web Scraping Recipe: track Apple.com for refurbished iPhones and get push alert on specific model.