Shopzilla, a shopping comparison site, released a study showing that 59 percent of online shoppers visit shopping aggregation sites first, according to an Internet Retailer report, even before they go directly to individual merchant sites. Over the past three years, more and more shoppers have been trending over to shopping comparison sites, from 46 percent of shoppers two years ago. The study showed that almost all shoppers - 87 percent - are comparing prices between the internet and catalog and store offerings. More than two thirds of shoppers indicate that they find the best deals online. On average, shoppers compare prices on four different sites, with 43 percent indicating they won't buy from their favorite store if they can find the same product cheaper elsewhere.