"The science of retail shopping has changed," says a consultant of the decline in impulse buys...

|By:, SA News Editor

"The science of retail shopping has changed," says a consultant of the decline in impulse buys as Web-savvy consumers know what they need, and go the store and get it. Or not, as Kid Dynamite notes. Amazon (AMZN) has an app allowing you to scan a barcode in-store, see that you can (nearly always) get it cheaper online, and instantly place the order. Best Buy (BBY) -40% Y/Y.