Idealo

Idealo is a German price-comparison engine founded in Berlin in 2000 and still headquartered in a 10,000 m² office in Berlin-Kreuzberg, with 500–1,000 employees. The site lets shoppers compare prices across hundreds of retailers, see price history graphs, set price alerts and read product reviews; it operates dedicated localised sites for Germany, Austria, France, Spain, Italy and the UK. Idealo is free for consumers and earns revenue via cost-per-click placements paid by retailers.