A comparison shopping website, sometimes called a price comparison website, price analysis tool, comparison shopping agent, shopbot or comparison shopping engine, is a vertical search engine that shoppers use to filter and compare products based on price, features, reviews and other criteria. Most comparison shopping sites aggregate product listings from many different retailers. since 2002 it supports millions of users searching for better prices in products.
A trovaprezzi user reports on opinioni.it that it doesn't take into account every company on the web, Star22 wrote a bad review saying that it doesn't always offer the best prices, also in the final price it doesn't calculate shipping prices, sometimes the shipping is more expensive than the product.
"Trovaprezzo is a portal that I have used a few times but I abandoned it because I did not find it reliable enough. In the site when entering the name of the product you want to buy, it will find for you the best site where it is more convenient to buy it. unfortunately, I realized that it does not take into account sites like Amazon and Ebay, which often offer much cheaper prices than those found by Trovaprezzo. I realized that in reality it only compares a certain number of sites, probably those registered on the portal, plus in the calculation of the final price it does not take into account shipping costs, so often the cheapest offer is not the first, in which the product is cheap but the shipping costs are very high, but one of the following, in which the product costs more but the shipments are included. Overall I use it to get an idea, but before buying, I always do some research on my own, which is by far the most reliable way to save!"