Tunisian dinar
It is a criminal offence in Tunisia to import or export dinar. Every year, each citizen can convert into foreign currency up to 6,000 Tunisian dinars before departure from the country. Therefore, prices at duty-free shops are in convertible currencies such as euros, US dollars and British pounds. There are many converting ATMs in the country for tourists.
Water supply and sanitation in Tunisia
Drinking water tariffs are uniform throughout the country. They include a fixed part and a variable part that depends on the consumption of water. As of September 2016, the variable part of the drinking water tariffs in Tunisia was as follows: 
The exchange rate of the Tunisian Dinar to the US Dollar is 1.00 TND = $0.604 US.