From Wikipedia:
Digitec Galaxus AG is the biggest online retailer in Switzerland. The company is 70% owned by Migros and operates the Digitec and Galaxus online stores in Switzerland and neighboring EU countries. Galaxus is an online department store with a wide range of products, while Digitec specializes in IT and electronics.
The company displays the historical price development of the last three months in a similar way to the browser plug-in Keepa for Amazon.
Switzerland is literally right next door! Did they use ants? Or Deutsche Post (which would also explain it).