Price comparison Shopping engines have become a highly successful extension of traditional search engines facilitating e-commerce activity and retail sales by allowing end users to compare online retailer prices for specific products from thousands of online shops. It can be said that Price Comparison search engines are little more than Shopping focused Meta Search Engines, however this would be inaccurate since most Shopping engines maintain their own directories of retailers and products.

Well known price comparison shopping sites include Shopping.com, Shopzilla.com and Shoprover.com.

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