A very good (and proven/old) price comparison tracker from before Web 2.0. I find it a bit cumbersome to figure shops who deliver to my country (NL) but if you'

A very good (and proven/old) price comparison tracker from before Web 2.0. I find it a bit cumbersome to figure shops who deliver to my country (NL) but if you're in German-speaking Europe this is AFAIK (still) the go-to. In The Netherlands, we got Tweakers Pricewatch.