> In Germany, where I'm originally from, we have geizhals.de for product and price comparison that works a lot like these pages you linked and has been around f

> In Germany, where I'm originally from, we have geizhals.de for product and price comparison that works a lot like these pages you linked and has been around for ages. Geizhals is not only useful as a price aggregator, but also when it comes to product discovery itself - often I look for products with very specific attributes, which may be represented by different names and keys between sellers and manufacturers. Geizhals' ability to collect and aggregate them in such detail is second to none. At that point pricing information is just an extra.