Customer Display is an inseparable part of the POS system. The customer sees the total price via this device. It is used in supermarkets and small markets or fast-foods as well. With it's help customers can see the price due indepedently, with their eyes, so they don't prevent cashier from working and thinking.
Nowadays, this kind of devices are manufactured by numerous companies. One of the most widespread companies is Epson. The price of a device starts from 130 USD and some cost more than 200 USD.
Suphra suggests you an alternative - our Customer Display costs about 70-80 USD and It looks like this: