A computer-implemented method according to one embodiment includes receiving prices from a remote site, e.g., a headquarter location; and sending the prices to a plurality of locations, e.g., store locations, with an instruction to output the prices on displays of display units. A computer-implemented method according to another embodiment includes receiving prices from a remote site, e.g., a headquarter location; and instructing display units at a location to output the prices on displays thereof. A computer-implemented method according to one embodiment includes receiving product information by scanning products to generate a check out list for automatic checkout using stored customer financial information. A computer implemented method according to one embodiment includes receiving bundled promotional offers from vendors for products based on buying behaviors captured by a mobile application running on a mobile device of a user; and displaying promotional offer on the mobile device.