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What is a comparison shopping engine?
Comparison shopping engines are websites which customers use to compare prices of products.
For example, Suzy Shopper goes to Pricegrabber.com to see where she can buy a Hoover vaccum for the lowest price. She sees all the vendors which offer this product—Amazon, Target.com, Sally’s Store, etc. She can compare prices, shipping fees, reviews, and product descriptions. Based on what Suzy Shopper sees on this website, she makes her decision and buys.