The most common use cases of Add-5 barcodes are for books, magazines, and other publications. For UPC variants, the Add-5 code is often used to designate issue or volume number, while EAN-13 attachments are used to specify price. The first digit of the EAN-13 Add-5 indicates the currency: 0 and 1 represent British pounds, 3 is Australian dollars, 4 is the New Zealand dollar, 5 is USD, and 6 is Canadian dollars. The next four digits represent the price multiplied by 100.
For example, an Add-5 code of 54495 means that the currency is USD and the price is $44.95. If the last four digits of an Add-5 code are 9999, this indicates a price that is equal to — or higher than — $99.99 in the specified currency.