 Proposed ranges for reserve prices for SmartNumbersTM are listed by Australian Communications Authority

The types of numbers that are most commonly used include those beginning with the prefixes '1300', and '1800', which are ten digits long, and numbers beginning with '13', which are six digits.The differences between the prefixes are the length of the number (six or ten digits), the license cost to use them each year (approximately A$1 for 1800 and 1300, A$10,000 for 13 numbers) and the call cost model.1300 numbers and 13 numbers share call costs between the caller and call recipient, whereas the 1800 model offers a national free call to the caller, with total costs of the call borne by the recipient.