Price Comparison Sites
Price comparison sites such as geizhals.at or idealo.at list the offers of different retailers for identical products side by side and usually sort them by price, availability or delivery costs. For retailers they are a sales channel in their own right, supplied through a product data feed tailored to each site, and they often deliver additional traffic with high purchase intent.
In practice
Because these sites rank primarily on price, delivery time and retailer rating, visibility depends less on classic SEO than on feed quality, competitive pricing and a well-maintained retailer profile with genuine customer reviews. In Austria, geizhals.at is a particularly important reference point for price comparisons in electronics, so many people research there before reaching the actual shop through Google Search. It is therefore worth analysing which price comparison sites really do send relevant referral traffic, so that feed maintenance can be prioritised accordingly. Comparison Shopping Services (CSS) are a separate matter: they are partners through which Shopping ads are served in Google's auction system, so an independent portal such as geizhals.at is not automatically a CSS.