Oh, and if you want to do this for your own country, you can re-use what we build so far!

https://github.com/badlogic/heissepreise

Happy to help if you need guidance! Adding a store is usually less than 200 LOC if they have a search API in their web store.

https://github.com/badlogic/heissepreise/blob/main/stores/billa.js