Retail impact of online price comparison using mobile devices, smartphones, aggregator sites. Shopping patterns and customer behaviour. Online sales growth from retail sites, where customers compare prices in stores or shopping malls and then buy online or from a competitor store nearby. Aggregator sites will grow rapidly, creating strong price competition, eroding viability of physical retail outlets, especially in electronic consumer goods, white label products, computers, textiles / fashion and in any other area where customers like to try before they buy.