My main drive was to document the crazy price hikes that's been going on in my home country, Greece, so I'm scraping its 3 biggest supermarkets and keep track of the prices of their products*

Had a lot of fun building and automating the scraping, especially in order to get around some bot catching rules that they have. For example one of them blocks all the requests originating from non-residential IPs, so I had to use tailscale to route the scraper's traffic through my home connection and take advantage of my ISP's CGNAT.

You can take a look here: https://pricewatcher.gr/en/

* I'm not doing any deduplication or price comparisons between the supermarkets, I only show historical prices of the same product, to showcase the changes.