Depends on your supermaket POS vendor. NCR has by far the most expensive offerings, but there are a few dozen smaller vendors, some of which have reimplemented

Depends on your supermaket POS vendor. NCR has by far the most expensive offerings, but there are a few dozen smaller vendors, some of which have reimplemented a few of the core concepts of ACS, BR Data and other components, thrown them all in one package, and offered it at a much more reasonable price.