Grant Gustafson, head of retail consulting and analytics at Sensormatic, said that this marked the most vital Black Friday increase that his group has seen in recent memory. In more than two years yet stays painfully apparent in areas like auto and medical well being insurance and a few groceries, like beef and bread. Shoppers signing up for the sale using the DFRE web site also wants to be testing the coupons the retailers offer on top of the listed discounts. However, the survey revealed that common online monthly expenditure per particular person has dropped significantly. With over a decade …